You searched for subject:(Microbes)
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1.
Singh Neetu.
Anaerobic Microbes and their Fermantation Pattern due to
Mineral Supplementation;.
Degree: 2005, Bundelkhand University
URL: http://shodhganga.inflibnet.ac.in/handle/10603/34224
included in file newline
Advisors/Committee Members: Singh Sultan.
Subjects/Keywords: Microbes; Microbes-Fermantation
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APA (6th Edition):
Neetu, S. (2005). Anaerobic Microbes and their Fermantation Pattern due to
Mineral Supplementation;. (Thesis). Bundelkhand University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/34224
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Neetu, Singh. “Anaerobic Microbes and their Fermantation Pattern due to
Mineral Supplementation;.” 2005. Thesis, Bundelkhand University. Accessed January 17, 2021.
http://shodhganga.inflibnet.ac.in/handle/10603/34224.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Neetu, Singh. “Anaerobic Microbes and their Fermantation Pattern due to
Mineral Supplementation;.” 2005. Web. 17 Jan 2021.
Vancouver:
Neetu S. Anaerobic Microbes and their Fermantation Pattern due to
Mineral Supplementation;. [Internet] [Thesis]. Bundelkhand University; 2005. [cited 2021 Jan 17].
Available from: http://shodhganga.inflibnet.ac.in/handle/10603/34224.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Neetu S. Anaerobic Microbes and their Fermantation Pattern due to
Mineral Supplementation;. [Thesis]. Bundelkhand University; 2005. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/34224
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Texas State University – San Marcos
2.
Valdes, Elise Claire.
Effect of compost tea on plant growth performance and the fate of microbial communities in soil.
Degree: MS, Biology, 2015, Texas State University – San Marcos
URL: https://digital.library.txstate.edu/handle/10877/6831
► Compost tea is a popular amendment used to improve soil quality and to control soil-borne diseases in plants. With proper brewing, compost tea contains many…
(more)
▼ Compost tea is a popular amendment used to improve soil quality and to control soil-borne diseases in plants. With proper brewing, compost tea contains many of the beneficial
microbes and nutrients of compost, but is more easily applied to plants. The purpose of this study was to (i) analyze the fate of microbial communities in spent mushroom substrate compost tea applied to soil microcosms planted with corn, and (ii) determine if growth of corn is influenced by specific constituents from compost tea, including
microbes only, nutrients only, or a combination of both (i.e. the complete compost tea). Two trials were performed, one with anaerobic soil conditions and a second with aerobic soil conditions. Bacteria and Eukarya were quantified over the 30 days with sampling events on days 0, 1, 2, 5, 10, 20, and 30, as were plant growth performance characteristics like root and sprout length or their biomass. Results demonstrated a significant drop (70-90%) in abundance of
microbes after application of compost tea, without recovery during the 30-day incubation period. Plant growth performance characteristics were not statistically significantly different for corn on soil receiving compost tea or separated components (i.e.
microbes or nutrients) only, or a water control. While these results cannot support assumptions on beneficial effects of compost tea on plant growth performance and microbial communities in soil after application, further scientific research should consider long-term studies with different plant species and soils to further investigate potential beneficial effects of compost tea.
Advisors/Committee Members: Hahn, Dittmar (advisor), Forstner, Michael (committee member), Rahe, Hardin (committee member), McLean, Robert (committee member).
Subjects/Keywords: Compost tea; Microbes
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APA (6th Edition):
Valdes, E. C. (2015). Effect of compost tea on plant growth performance and the fate of microbial communities in soil. (Masters Thesis). Texas State University – San Marcos. Retrieved from https://digital.library.txstate.edu/handle/10877/6831
Chicago Manual of Style (16th Edition):
Valdes, Elise Claire. “Effect of compost tea on plant growth performance and the fate of microbial communities in soil.” 2015. Masters Thesis, Texas State University – San Marcos. Accessed January 17, 2021.
https://digital.library.txstate.edu/handle/10877/6831.
MLA Handbook (7th Edition):
Valdes, Elise Claire. “Effect of compost tea on plant growth performance and the fate of microbial communities in soil.” 2015. Web. 17 Jan 2021.
Vancouver:
Valdes EC. Effect of compost tea on plant growth performance and the fate of microbial communities in soil. [Internet] [Masters thesis]. Texas State University – San Marcos; 2015. [cited 2021 Jan 17].
Available from: https://digital.library.txstate.edu/handle/10877/6831.
Council of Science Editors:
Valdes EC. Effect of compost tea on plant growth performance and the fate of microbial communities in soil. [Masters Thesis]. Texas State University – San Marcos; 2015. Available from: https://digital.library.txstate.edu/handle/10877/6831
3.
Brown, Anya.
The influence of water flow on mechanisms underlying coral-algal competition.
Degree: MS, Biology, 2012, California State University – Northridge
URL: http://hdl.handle.net/10211.2/1951
► Interactions between corals and algae have been implicated in influencing the potential fate of coral reef ecosystems. Recently, studies have concentrated on the mechanisms underlying…
(more)
▼ Interactions between corals and algae have been implicated in influencing the potential fate of coral reef ecosystems. Recently, studies have concentrated on the mechanisms underlying coral-algal interactions as indicators of the effects algae can have on corals. Several studies have focused on algal-mediated, microbial activity, which can cause hypoxic conditions and indirectly yield coral mortality. However, the effectiveness of this competitive mechanism, and others, likely changes in naturally varying flow conditions. The present work quantified the effectiveness of chemically-mediated (i.e., microbially-mediated localized hypoxia) and physically-mediated (i.e., shading and abrasion) mechanisms of competition between corals and algae in differing flow environments. This work comprised of two separate studies, one focused on quantifying distributions and outcomes of coral-algal interactions in a field context of low and high flow, and a second study which focused on laboratory measurements of boundary layer hypoxia in the context of coral-algal interactions and
microbes.
For the first study, flow was measured on multiple spatial scales to determine areas on the reef where low and high flow conditions exist. Microbial densities were quantified as a proxy for microbial activity to determine the potential for microbially-mediated competition in different flow environments. Coral-algal interactions were counted and outcomes of coral-algal interactions were estimated in the areas designated as low and high flow to determine the environments in which different algae can negatively affect coral. Interactions between corals and algae were observed over time to see the prolonged effects of algal contact on coral growth and cover. A goal of the second study was to quantify the changes in diffusive boundary layer thickness and oxygen conditions within the zones of interaction between algal turf and massive Porites spp. as flow increased. Additionally, microbial contribution to oxygen conditions was measured within algal turf-massive Porites spp. interactions to determine the effects of
microbes on oxygen conditions. The results for both studies indicate the effectiveness of mechanisms of competition underlying coral-algal interactions is dependent on the flow environment. Algal turf outcompetes coral more frequently in low flow. Interaction zones between algal turf and massive Porites retain higher densities of
microbes and create and maintain extreme oxygen concentration more frequently in low flow than in high flow. Although microbial densities are higher within the zones of interaction between algal turf and massive Porites located in low flow, oxygen concentrations are controlled by algal turf not
microbes. These results suggest another potential mechanism of competition, algal-driven oxygen extreme concentrations. However, coral cover and growth are not different in low versus high flow. Corals compensate for algal presence by growing more vertically and resist algal overgrowth due to other physiological, ecological…
Advisors/Committee Members: Carpenter, Robert C. (advisor), Edmunds, Peter J. (committee member).
Subjects/Keywords: Microbes; Dissertations, Academic – CSUN – Biology.
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Brown, A. (2012). The influence of water flow on mechanisms underlying coral-algal competition. (Masters Thesis). California State University – Northridge. Retrieved from http://hdl.handle.net/10211.2/1951
Chicago Manual of Style (16th Edition):
Brown, Anya. “The influence of water flow on mechanisms underlying coral-algal competition.” 2012. Masters Thesis, California State University – Northridge. Accessed January 17, 2021.
http://hdl.handle.net/10211.2/1951.
MLA Handbook (7th Edition):
Brown, Anya. “The influence of water flow on mechanisms underlying coral-algal competition.” 2012. Web. 17 Jan 2021.
Vancouver:
Brown A. The influence of water flow on mechanisms underlying coral-algal competition. [Internet] [Masters thesis]. California State University – Northridge; 2012. [cited 2021 Jan 17].
Available from: http://hdl.handle.net/10211.2/1951.
Council of Science Editors:
Brown A. The influence of water flow on mechanisms underlying coral-algal competition. [Masters Thesis]. California State University – Northridge; 2012. Available from: http://hdl.handle.net/10211.2/1951

Royal Holloway, University of London
4.
Ebertz, Andreas.
The role of FHY3 and FAR1 in plant-microbial interaction in Arabidopsis thaliana.
Degree: PhD, 2017, Royal Holloway, University of London
URL: https://pure.royalholloway.ac.uk/portal/en/publications/the-role-of-fhy3-and-far1-in-plantmicrobial-interaction-in-arabidopsis-thaliana(bb0abc48-7fe4-4c94-9c8b-3d3d2cede991).html
;
https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.792693
► The transposase-derived transcription factors FAR-RED ELONGATED HYPOCOTYL 3 (FHY3) and FAR-RED IMPAIRED RESPONSE 1 (FAR1) hold multifunctional roles in A. thaliana, such as in resetting…
(more)
▼ The transposase-derived transcription factors FAR-RED ELONGATED HYPOCOTYL 3 (FHY3) and FAR-RED IMPAIRED RESPONSE 1 (FAR1) hold multifunctional roles in A. thaliana, such as in resetting the circadian clock, flowering and chloroplast division. This thesis aimed to investigate the cause of extensive leaf-lesion formation observed in fhy3 far1 mutants, reminiscent of the programmed cell death (PCD) associated with plant defence responses. Global gene expression analysis suggested a constitutively activated defence response in fhy3 far1 mutants causing the mutant's leaf-lesions. However, defence marker gene expression associated with Salicylic Acid (SA)- and Jasmonic Acid (JA)/Ethylene (ET)-signalling, the two groups of signalling compounds that mediate defence response, was downregulated at the same time. Analysis of transcriptional changes upon biotic challenges suggested that this was the result of negative regulatory feedback in fhy3 far1 mutants. A microarray analysis of key differentially expressed genes in fhy3 far1 mutants revealed an upregulation of the pro-PCD gene CYSTEINE-RICH RECEPTOR-LIKE PROTEIN KINASE 13 (CRK13) and a downregulation of the PCD-inhibiting METACASPASE 2 (MC2). The function of CRK13 and MC2 in PCD suggested that their misregulation in fhy3 far1 mutants could be part of the primary reason for increased leaf-lesion formation in double mutant plants. Transcriptional analysis of responses to biotic challenges in MC2 and CRK13 misexpression lines, however, revealed little similarity to the responses seen in fhy3 far1 mutants. A constitutively activated defence response infers alterations of the associated microbiota. Initial investigations indicated that the fhy3 far1 mutant plant's phenotypical changes of extended leaf-lesion formation will be very likely to affect the phyllosphere, which prompted a next generation sequencing investigation of the phyllospheric microbiota. Its composition showed greatly increased species richness and a more even spectrum of abundances of bacterial species in fhy3 far1, a pattern that is commonly associated with continuing environmental disruption. The WT phyllosphere showed a stronger domination by a few species that were associated with the production of antimicrobials. In addition, the fungal community in fhy3 far1 mutant plants contained more pathogenic fungi in comparison to more saprotrophic fungi in WT. These findings support the suggestion that pathogen-protective properties of beneficial microbes in the phyllosphere are a community characteristic linked to microbial competition.
Subjects/Keywords: Arabidopsis; defence response; microbes
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Ebertz, A. (2017). The role of FHY3 and FAR1 in plant-microbial interaction in Arabidopsis thaliana. (Doctoral Dissertation). Royal Holloway, University of London. Retrieved from https://pure.royalholloway.ac.uk/portal/en/publications/the-role-of-fhy3-and-far1-in-plantmicrobial-interaction-in-arabidopsis-thaliana(bb0abc48-7fe4-4c94-9c8b-3d3d2cede991).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.792693
Chicago Manual of Style (16th Edition):
Ebertz, Andreas. “The role of FHY3 and FAR1 in plant-microbial interaction in Arabidopsis thaliana.” 2017. Doctoral Dissertation, Royal Holloway, University of London. Accessed January 17, 2021.
https://pure.royalholloway.ac.uk/portal/en/publications/the-role-of-fhy3-and-far1-in-plantmicrobial-interaction-in-arabidopsis-thaliana(bb0abc48-7fe4-4c94-9c8b-3d3d2cede991).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.792693.
MLA Handbook (7th Edition):
Ebertz, Andreas. “The role of FHY3 and FAR1 in plant-microbial interaction in Arabidopsis thaliana.” 2017. Web. 17 Jan 2021.
Vancouver:
Ebertz A. The role of FHY3 and FAR1 in plant-microbial interaction in Arabidopsis thaliana. [Internet] [Doctoral dissertation]. Royal Holloway, University of London; 2017. [cited 2021 Jan 17].
Available from: https://pure.royalholloway.ac.uk/portal/en/publications/the-role-of-fhy3-and-far1-in-plantmicrobial-interaction-in-arabidopsis-thaliana(bb0abc48-7fe4-4c94-9c8b-3d3d2cede991).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.792693.
Council of Science Editors:
Ebertz A. The role of FHY3 and FAR1 in plant-microbial interaction in Arabidopsis thaliana. [Doctoral Dissertation]. Royal Holloway, University of London; 2017. Available from: https://pure.royalholloway.ac.uk/portal/en/publications/the-role-of-fhy3-and-far1-in-plantmicrobial-interaction-in-arabidopsis-thaliana(bb0abc48-7fe4-4c94-9c8b-3d3d2cede991).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.792693

Universiteit Utrecht
5.
Neilen, M.
Plant litter decomposition in agro-ecosystems: a functional study on the effect of resource history, chemical composition of plant litter and the dynamics of the microbial community.
Degree: 2014, Universiteit Utrecht
URL: http://dspace.library.uu.nl:8080/handle/1874/296473
► Microbial decomposition of plant litter is of vital importance to agricultural ecosystems because it facilitates nutrient cycling in soils. The functional dynamics of the microbial…
(more)
▼ Microbial decomposition of plant litter is of vital importance to agricultural ecosystems because it facilitates nutrient cycling in soils. The functional dynamics of the microbial community and their interaction with plant substrate chemistry are poorly understood. In the majority of global carbon models, soil communities are assumed to be functionally similar with regard to decomposition. The underlying idea is that a high degree of functional redundancy is present in microbial systems due to high species richness, rapid adaptation and physiological flexibility. However, this idea has recently been challenged. It is now considered likely that microbial communities are functionally dissimilar. However, the mechanisms by which these differences arise are not yet clear. Among the possibilities are local adaptation of communities or differences in overall ability, which implies that some soils are simply more active than others. This insight calls for research to clarify the interaction between soil microbial community and plant litter composition to provide better estimates for carbon models. Research questions that will be addressed are:
1) Are soils functionally dissimilar?
2) Is home field advantage or ability the driving mechanism for differences in litter degradation between temperate soils?
3) At what time scale does local adaptation occur?
The project is innovative as the interaction between the microbial community and plant litter chemistry in artificial soils has not yet been studied. Moreover, the use of state of the art methods like shotgun – mRNA metatranscriptomics and pyrolysis-molecular beam mass spectrometry will provide a high resolution insight in plant litter decomposition dynamics.
Advisors/Committee Members: Schmitt, Heike.
Subjects/Keywords: soil microbes; metatranscriptomics; succession; home field advantage
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Neilen, M. (2014). Plant litter decomposition in agro-ecosystems: a functional study on the effect of resource history, chemical composition of plant litter and the dynamics of the microbial community. (Masters Thesis). Universiteit Utrecht. Retrieved from http://dspace.library.uu.nl:8080/handle/1874/296473
Chicago Manual of Style (16th Edition):
Neilen, M. “Plant litter decomposition in agro-ecosystems: a functional study on the effect of resource history, chemical composition of plant litter and the dynamics of the microbial community.” 2014. Masters Thesis, Universiteit Utrecht. Accessed January 17, 2021.
http://dspace.library.uu.nl:8080/handle/1874/296473.
MLA Handbook (7th Edition):
Neilen, M. “Plant litter decomposition in agro-ecosystems: a functional study on the effect of resource history, chemical composition of plant litter and the dynamics of the microbial community.” 2014. Web. 17 Jan 2021.
Vancouver:
Neilen M. Plant litter decomposition in agro-ecosystems: a functional study on the effect of resource history, chemical composition of plant litter and the dynamics of the microbial community. [Internet] [Masters thesis]. Universiteit Utrecht; 2014. [cited 2021 Jan 17].
Available from: http://dspace.library.uu.nl:8080/handle/1874/296473.
Council of Science Editors:
Neilen M. Plant litter decomposition in agro-ecosystems: a functional study on the effect of resource history, chemical composition of plant litter and the dynamics of the microbial community. [Masters Thesis]. Universiteit Utrecht; 2014. Available from: http://dspace.library.uu.nl:8080/handle/1874/296473

Stellenbosch University
6.
Olivier, Charl Francois.
An investigation into the degradation of biochar and its interactions with plants and soil microbial community.
Degree: MScAgric, Soil Science, 2011, Stellenbosch University
URL: http://hdl.handle.net/10019.1/17944
► ENGLISH ABSTRACT: Biochar (charcoal) is lauded by many scientists as an effective way to remove carbon dioxide from the atmosphere and storing it in a…
(more)
▼ ENGLISH ABSTRACT: Biochar (charcoal) is lauded by many scientists as an effective way to remove carbon dioxide from the atmosphere and storing it in a very stable form in the soil for hundreds to thousands of years, whilst promoting soil fertility and productivity. Considering that no significant amounts of charcoal are presently accumulating in the environment, despite considerable amounts produced globally in natural and man-made fires, this study focuses on understanding the degradation of biochar and its interactions with plants and soil organisms. The following experiments were conducted to achieve this goal. Controlled chemical oxidation of biochar, using different concentrations of hydrogen peroxide, was conducted in an attempt to mimic the enzymatic degradation of biochar by basidiomycetes. The changes occurring in biochars structure and chemistry were assessed afterwards. Furthermore, aerobic and anaerobic digestion of biochar was conducted in vitro, and in vivo to investigate the changes occurring in biochar‘s elemental composition and chemistry during oxidation and factors that play a determining role in the rate of biochar degradation. The influence of biochar in soil on free-living and symbiotic microbial communities as well as its impact on total plant biomass production and root development was assessed in three greenhouse pot trials using wheat and green beans as test plants It was proven that biochar is almost fully H2O2-degradable, mostly through hydroxylation and carboxylation reactions which led to the formation of various short chained carboxylic acids, surface saturation with acidic functional groups as determined by the surface acidity measurements and proven by the increase in the intensity of FT-IR peaks associated with carboxyl and phenolic C-O groups. Furthermore, hydrogen peroxide treatment resulted in preferential removal of volatile organic carbons and led to the purification of biochar as evident by the new, more intense and sharper peaks in the region of 1600-1000 cm-1. These FT-IR peaks are considered as the more recalcitrant fraction of biochar and were shown to be mostly associated with transformation products of lignin and cellulose formed during pyrolysis.
The incubation trial confirmed that biochar cannot be utilized as a sole carbon source without the addition of nutrients or glucose, to activate microbial activity within the columns. Furthermore, abiotic oxidation can be facilitated by oxidative soil minerals such as birnessite, but oxidation with atmospheric oxygen did not result in the evolution of CO2 from biochar. The average CO2 production in pot trials without plants in both the fertilized and unfertilized treatments increased linearly (R2= 0.80; 0.79 respectively) with increasing biochar application rates when biochar was the main carbon sources. Anaerobic degradation of biochar by a methanogenic consortium was much more efficient in utilizing biochar as a carbon source, compared to aerobic digestion. The anaerobic digesters maintained a chemical oxygen demand (COD)…
Advisors/Committee Members: Rozanov, Andrei, Botha, A., Stellenbosch University. Faculty of AgriSciences. Dept. of Soil Science..
Subjects/Keywords: Biochar – Degradation; Microbes; Symbiosis; Charcoal; Soil microbiology
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Olivier, C. F. (2011). An investigation into the degradation of biochar and its interactions with plants and soil microbial community. (Masters Thesis). Stellenbosch University. Retrieved from http://hdl.handle.net/10019.1/17944
Chicago Manual of Style (16th Edition):
Olivier, Charl Francois. “An investigation into the degradation of biochar and its interactions with plants and soil microbial community.” 2011. Masters Thesis, Stellenbosch University. Accessed January 17, 2021.
http://hdl.handle.net/10019.1/17944.
MLA Handbook (7th Edition):
Olivier, Charl Francois. “An investigation into the degradation of biochar and its interactions with plants and soil microbial community.” 2011. Web. 17 Jan 2021.
Vancouver:
Olivier CF. An investigation into the degradation of biochar and its interactions with plants and soil microbial community. [Internet] [Masters thesis]. Stellenbosch University; 2011. [cited 2021 Jan 17].
Available from: http://hdl.handle.net/10019.1/17944.
Council of Science Editors:
Olivier CF. An investigation into the degradation of biochar and its interactions with plants and soil microbial community. [Masters Thesis]. Stellenbosch University; 2011. Available from: http://hdl.handle.net/10019.1/17944

Queens University
7.
Embleton, Laura.
Silver Nanoparticles and the Plant-Associating Abilities of Rhizobiaceae Bacteria
.
Degree: Biology, 2016, Queens University
URL: http://hdl.handle.net/1974/14631
► The use of nanoparticle technology in consumer products has been increasing due to their broad-spectrum antimicrobial properties. Specifically, silver nanoparticles (AgNPs) can demonstrate distinct physiochemical…
(more)
▼ The use of nanoparticle technology in consumer products has been increasing due to their broad-spectrum antimicrobial properties. Specifically, silver nanoparticles (AgNPs) can demonstrate distinct physiochemical properties compared to bulk silver, including a large surface area to volume ratio that allows for higher reactivity with bacterial cell surfaces. AgNPs are being released into the environment, including soil ecosystems through various pathways such as points of production or during disposal of silver-containing products. This raises the concern about the potential impact on beneficial soil bacteria and their surrounding ecosystems. Members of the Rhizobiaceae family play important roles in nutrient cycling and contribute to overall soil fertility and the experiments in this thesis address the potential for AgNP-mediated toxicity on these plant-associating bacteria. Respiration analysis of Bradyrhizobium japonicum, Azospirillum brasilense, and Agrobacterium tumefaciens has revealed that AgNPs can negatively impact the growth and survival of these bacterial species, with B. japonicum being the most susceptible. Additionally, swimming motility assays using B. japonicum showed a significant decrease in colony diameter when treated with AgNPs (50 ppm). A significant decrease in root colonization of Triticum aestivum roots by A. brasilense was observed as AgNP treatment concentrations increased. Although some of the experiments could not be completed, taken together, these experiments and the research reported herein highlights the potential toxicological effects of AgNPs on bacterial species vital to the growth and health of agriculturally important crops.
Subjects/Keywords: Silver Nanoparticles
;
Plant Interacting Microbes
;
Rhizobiaceae
;
Toxicology
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Embleton, L. (2016). Silver Nanoparticles and the Plant-Associating Abilities of Rhizobiaceae Bacteria
. (Thesis). Queens University. Retrieved from http://hdl.handle.net/1974/14631
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Embleton, Laura. “Silver Nanoparticles and the Plant-Associating Abilities of Rhizobiaceae Bacteria
.” 2016. Thesis, Queens University. Accessed January 17, 2021.
http://hdl.handle.net/1974/14631.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Embleton, Laura. “Silver Nanoparticles and the Plant-Associating Abilities of Rhizobiaceae Bacteria
.” 2016. Web. 17 Jan 2021.
Vancouver:
Embleton L. Silver Nanoparticles and the Plant-Associating Abilities of Rhizobiaceae Bacteria
. [Internet] [Thesis]. Queens University; 2016. [cited 2021 Jan 17].
Available from: http://hdl.handle.net/1974/14631.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Embleton L. Silver Nanoparticles and the Plant-Associating Abilities of Rhizobiaceae Bacteria
. [Thesis]. Queens University; 2016. Available from: http://hdl.handle.net/1974/14631
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
8.
Sharma, Krishana.
Studies on single cell prohins of microbes; -.
Degree: Botany, 1986, Pt. Ravishankar Shukla University
URL: http://shodhganga.inflibnet.ac.in/handle/10603/42572
None
Reference p.97 - 115
Advisors/Committee Members: saksena, S B.
Subjects/Keywords: Cell; Microbes; Studies
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APA ·
Chicago ·
MLA ·
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Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Sharma, K. (1986). Studies on single cell prohins of microbes; -. (Thesis). Pt. Ravishankar Shukla University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/42572
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Sharma, Krishana. “Studies on single cell prohins of microbes; -.” 1986. Thesis, Pt. Ravishankar Shukla University. Accessed January 17, 2021.
http://shodhganga.inflibnet.ac.in/handle/10603/42572.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Sharma, Krishana. “Studies on single cell prohins of microbes; -.” 1986. Web. 17 Jan 2021.
Vancouver:
Sharma K. Studies on single cell prohins of microbes; -. [Internet] [Thesis]. Pt. Ravishankar Shukla University; 1986. [cited 2021 Jan 17].
Available from: http://shodhganga.inflibnet.ac.in/handle/10603/42572.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Sharma K. Studies on single cell prohins of microbes; -. [Thesis]. Pt. Ravishankar Shukla University; 1986. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/42572
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
9.
Jambulapati, Sreeram.
Precipitation Of Synthetic Dolomite At Low Tempearures With The Influence Of Microbes.
Degree: MS, Geology, 2017, University of North Dakota
URL: https://commons.und.edu/theses/2238
► New approaches in carbonate geochemistry are aiding geoscientists in understanding dolomite formation. Dolomite is largely absent in modern depositional environments but is present in…
(more)
▼ New approaches in carbonate geochemistry are aiding geoscientists in
understanding dolomite formation. Dolomite is largely absent in modern depositional
environments but is present in ancient rocks. The current problem is the inability to
synthesize it under low-temperature conditions in the laboratory. Until recently
laboratory preparation of dolomite required elevated temperatures (<100 °C) to overcome
kinetic barriers. One novel approach involves using bacteria to overcome the kinetic
barriers that have frustrated efforts to synthesize dolomite at near surface temperatures.
This study presents preliminary results of experiments in which three strains of bacteria
were used to inoculate a magnesium deficient amorphous calcium carbonate (Mg-ACC)
medium (CO3
2-: Mg2+: Ca2+ in 2:1:1 ratio). The bacteria used include an aerobic strain,
Virgibacillus marismortui (ATCCÎ 700626™) and two anaerobic strains, Desulfovibrio
desulfuricans subsp. deslufuricans (ATCCβ9577™) and Escherichia coli. All the
experiments were conducted at 30 °C and 37˚C for 40 days. Preliminary XRD results are
consistent with the precipitation of a carbonate phase with a dolomite-like XRD peak
near 31˚ 2θ, Cu kα radiation. Similar peaks were not apparent for the experiments using
the aerobic strain nor the bacteria free control. These results indicate that the two strains
of anaerobic bacteria may aid in the formation of a magnesium-rich carbonate phase
similar to dolomite at low temperature, within short periods of time.
Advisors/Committee Members: Stephan H. Nordeng.
Subjects/Keywords: Amorphous; Bacteria; Dolomite; Low Temperature; Microbes
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APA (6th Edition):
Jambulapati, S. (2017). Precipitation Of Synthetic Dolomite At Low Tempearures With The Influence Of Microbes. (Masters Thesis). University of North Dakota. Retrieved from https://commons.und.edu/theses/2238
Chicago Manual of Style (16th Edition):
Jambulapati, Sreeram. “Precipitation Of Synthetic Dolomite At Low Tempearures With The Influence Of Microbes.” 2017. Masters Thesis, University of North Dakota. Accessed January 17, 2021.
https://commons.und.edu/theses/2238.
MLA Handbook (7th Edition):
Jambulapati, Sreeram. “Precipitation Of Synthetic Dolomite At Low Tempearures With The Influence Of Microbes.” 2017. Web. 17 Jan 2021.
Vancouver:
Jambulapati S. Precipitation Of Synthetic Dolomite At Low Tempearures With The Influence Of Microbes. [Internet] [Masters thesis]. University of North Dakota; 2017. [cited 2021 Jan 17].
Available from: https://commons.und.edu/theses/2238.
Council of Science Editors:
Jambulapati S. Precipitation Of Synthetic Dolomite At Low Tempearures With The Influence Of Microbes. [Masters Thesis]. University of North Dakota; 2017. Available from: https://commons.und.edu/theses/2238

Colorado State University
10.
Shaw, Elizabeth Ashley.
Fire management effects on carbon flow from root litter to the soil community in a tallgrass prairie.
Degree: MS(M.S.), Ecology, 2013, Colorado State University
URL: http://hdl.handle.net/10217/80312
► Belowground litter decomposition is a major component of carbon cycling in grasslands, where it provides energy and nutrients for soil microbes and fauna. Fire, a…
(more)
▼ Belowground litter decomposition is a major component of carbon cycling in grasslands, where it provides energy and nutrients for soil
microbes and fauna. Fire, a historically frequent disturbance and a common management tool, removes above ground biomass and litter accumulation making belowground root litter of greater importance to decomposer food webs. While many studies use biomass measures of soil faunal groups to estimate changes in soil food web structure and energy flow, little is known about the flow of C from root litter to soil microbial and nematode communities in grasslands and if biomass measures can indicate this flow of C at a fine scale. Our greenhouse experiment first investigated how C from Andropogon gerardii (big bluestem) root litter was allocated into different soil microbial and nematode groups in frequently burned (FB) and infrequently burned (IB) tallgrass prairie soil. Incorporation of 13C into microbial fatty acids and nematode communities was determined on six occasions during decomposition in order to examine whether different groups of microorganisms and fauna were specialized on the root-litter derived C. Results showed that FB and IB soils supported microbial communities of differing community composition and abundance. IB had, generally, higher microbial abundance, more strongly dominated by bacteria than FB soil. Compound-specific stable isotope ratio analysis showed that root litter-C was more quickly incorporated into FB soil
microbes. By the end of the experiment, all microbial groups were more highly 13C enriched in FB soils than in IB soils, with the exception of gram-negative bacteria for which there was no significant difference between the two soils. For nematodes, there was no significant difference in abundances; however, fungivore nematodes only incorporated root litter-C in FB soil while bacterivores, omnivores and predators derived at least some C from root litter in both treatments. Despite lower abundance of
microbes in FB soil, total root litter mass loss did not differ between FB and IB soil, indicating higher microbial activity in FB soil. Our results reveal that FB prairie soil food webs are more closely coupled to root litter decomposition, where root litter is of increased importance as a C and nutrient source due to the frequent removal of standing biomass and shoot litter by fire. In the second part of our greenhouse experiment, we compared soil energy channel biomass measures with C flow into the soil food web. By coupling the energy channel biomass measurement approach with our decomposition study (using stable isotope enrichment to trace the flow of C into nematode trophic groups), we compared the quantified C flow to nematode energy channel biomass measures during decomposition of 13C-labeled big bluestem root litter. We hypothesized that biomass measures for nematode bacterial and fungal energy channels would indicate the proportion of root litter derived C incorporated into each nematode energy channel. Nematode biomasses and δ13C values were…
Advisors/Committee Members: Wall, Diana H. (advisor), Cotrufo, M. Francesca (committee member), Kelly, Eugene F. (committee member).
Subjects/Keywords: 13C; decomposition; grassland; microbes; nematodes; soil
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Shaw, E. A. (2013). Fire management effects on carbon flow from root litter to the soil community in a tallgrass prairie. (Masters Thesis). Colorado State University. Retrieved from http://hdl.handle.net/10217/80312
Chicago Manual of Style (16th Edition):
Shaw, Elizabeth Ashley. “Fire management effects on carbon flow from root litter to the soil community in a tallgrass prairie.” 2013. Masters Thesis, Colorado State University. Accessed January 17, 2021.
http://hdl.handle.net/10217/80312.
MLA Handbook (7th Edition):
Shaw, Elizabeth Ashley. “Fire management effects on carbon flow from root litter to the soil community in a tallgrass prairie.” 2013. Web. 17 Jan 2021.
Vancouver:
Shaw EA. Fire management effects on carbon flow from root litter to the soil community in a tallgrass prairie. [Internet] [Masters thesis]. Colorado State University; 2013. [cited 2021 Jan 17].
Available from: http://hdl.handle.net/10217/80312.
Council of Science Editors:
Shaw EA. Fire management effects on carbon flow from root litter to the soil community in a tallgrass prairie. [Masters Thesis]. Colorado State University; 2013. Available from: http://hdl.handle.net/10217/80312

University of Toronto
11.
Horrigan, Emma J.
The Impact of Lesser Snow Goose Herbivory on Above and Belowground Nutrient Dynamics in Two Sub-Arctic Ecosystems.
Degree: 2010, University of Toronto
URL: http://hdl.handle.net/1807/24580
► In order to determine the impact of lesser snow goose (Chen caerulescens caerulescens) herbivory on above and belowground nutrient dynamics, a grazing and nutrient addition…
(more)
▼ In order to determine the impact of lesser snow goose (Chen caerulescens caerulescens) herbivory on above and belowground nutrient dynamics, a grazing and nutrient addition experiment was conducted in two habitat types utilized by snow geese near Churchill, Manitoba. Forage plant nutrition, soil microbial biomass, and inorganic and organic soil nutrients were measured in relation to the timing of grazing, over two consecutive summers. Soil was collected from the rhizosphere to determine the influence of foliar herbivory on root-microbe interactions. Primary productivity in both habitats is co-limited by the availability of both nitrogen (N) and phosphorus (P). Aboveground defoliation either caused a reduction or no change in soil microbial biomass nutrients (carbon (C), N, or P). Defoliated shoots had higher N concentrations and did not show compensatory growth within the season. Root biomass was somewhat reduced with grazing, but higher whole plant N content suggests that grazing does not compromise N-uptake.
MAST
Advisors/Committee Members: Jefferies, Robert L., Ecology and Evolutionary Biology.
Subjects/Keywords: lesser snow geese; microbes; rhizosphere; nitrogen; 0309
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Horrigan, E. J. (2010). The Impact of Lesser Snow Goose Herbivory on Above and Belowground Nutrient Dynamics in Two Sub-Arctic Ecosystems. (Masters Thesis). University of Toronto. Retrieved from http://hdl.handle.net/1807/24580
Chicago Manual of Style (16th Edition):
Horrigan, Emma J. “The Impact of Lesser Snow Goose Herbivory on Above and Belowground Nutrient Dynamics in Two Sub-Arctic Ecosystems.” 2010. Masters Thesis, University of Toronto. Accessed January 17, 2021.
http://hdl.handle.net/1807/24580.
MLA Handbook (7th Edition):
Horrigan, Emma J. “The Impact of Lesser Snow Goose Herbivory on Above and Belowground Nutrient Dynamics in Two Sub-Arctic Ecosystems.” 2010. Web. 17 Jan 2021.
Vancouver:
Horrigan EJ. The Impact of Lesser Snow Goose Herbivory on Above and Belowground Nutrient Dynamics in Two Sub-Arctic Ecosystems. [Internet] [Masters thesis]. University of Toronto; 2010. [cited 2021 Jan 17].
Available from: http://hdl.handle.net/1807/24580.
Council of Science Editors:
Horrigan EJ. The Impact of Lesser Snow Goose Herbivory on Above and Belowground Nutrient Dynamics in Two Sub-Arctic Ecosystems. [Masters Thesis]. University of Toronto; 2010. Available from: http://hdl.handle.net/1807/24580

University of Oxford
12.
Ghoul, Melany.
Social dynamics in natural populations of Pseudomonas aeruginosa.
Degree: PhD, 2014, University of Oxford
URL: http://ora.ox.ac.uk/objects/uuid:e57d9716-0a8e-4b70-8936-83ce9dd03708
;
https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.647623
► Microbes rely on collective behaviours, such as communication and cooperation to survive and form communities. The majority of these social behaviours are mediated by the…
(more)
▼ Microbes rely on collective behaviours, such as communication and cooperation to survive and form communities. The majority of these social behaviours are mediated by the secretion of public good molecules into a shared environment such that they can be utilized by neighbouring cells. Therefore, individuals that engage in costly cooperative behaviour are susceptible to exploitation by selfish cheats that gain the benefit of cooperation without investing their share of the public good cost. Understanding such bacterial social interactions and the underlying molecular mechanisms gives insight into their complex social life in natural environments and can be used to develop alternative treatments for pathogenic bacteria that rely on such social interactions for virulence and to infect hosts. In this thesis I examine social behaviours expressed by the opportunistic pathogen, Pseudomonas aeruginosa. I develop an understanding of bacterial social dynamics, particularly competitive dynamics between cooperator and cheat strains and strains that engage in bacteriocin-mediated chemical warfare. I investigate bacterial cheat-cooperator systems in several ways: 1) I begin with a review describing the evolution of and response to cheating across a range of organisms and discuss the confusion that arises in identifying cheats particularly in microbial studies and therefore propose a key to identify cheating behaviour. 2) I empirically test whether cheating behaviour is context dependent in bacterial populations and reveal that the ability to cheat varies with the abiotic and social environment, which are two fluctuating conditions in natural environments. 3) I take an experimental approach to investigate why cheat invasion is not commonly observed in natural bacterial populations by testing the effect of cooperative bacterial growth dynamics on cheating ability. I find that secretion of public goods varies with bacterial growth dynamics and physiological growth stages which may explain why cheat invasion is more commonly observed in lab cultures and not in established natural populations. 4) In the final chapter I experimentally use natural isolates to examine the role of bacteriocins in mediating competition in pathogenic populations and find that contrary to empirical and theoretical work, bacteriocins do not play a significant role in strain competitive success and dominance. The thesis has laid groundwork for studying and understanding the role of social behaviours in bacterial systems and for further exploring social dynamics in natural bacterial populations.
Subjects/Keywords: 616.9; Biology; evolutionary biology; social evolution; microbes
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Ghoul, M. (2014). Social dynamics in natural populations of Pseudomonas aeruginosa. (Doctoral Dissertation). University of Oxford. Retrieved from http://ora.ox.ac.uk/objects/uuid:e57d9716-0a8e-4b70-8936-83ce9dd03708 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.647623
Chicago Manual of Style (16th Edition):
Ghoul, Melany. “Social dynamics in natural populations of Pseudomonas aeruginosa.” 2014. Doctoral Dissertation, University of Oxford. Accessed January 17, 2021.
http://ora.ox.ac.uk/objects/uuid:e57d9716-0a8e-4b70-8936-83ce9dd03708 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.647623.
MLA Handbook (7th Edition):
Ghoul, Melany. “Social dynamics in natural populations of Pseudomonas aeruginosa.” 2014. Web. 17 Jan 2021.
Vancouver:
Ghoul M. Social dynamics in natural populations of Pseudomonas aeruginosa. [Internet] [Doctoral dissertation]. University of Oxford; 2014. [cited 2021 Jan 17].
Available from: http://ora.ox.ac.uk/objects/uuid:e57d9716-0a8e-4b70-8936-83ce9dd03708 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.647623.
Council of Science Editors:
Ghoul M. Social dynamics in natural populations of Pseudomonas aeruginosa. [Doctoral Dissertation]. University of Oxford; 2014. Available from: http://ora.ox.ac.uk/objects/uuid:e57d9716-0a8e-4b70-8936-83ce9dd03708 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.647623

Florida Atlantic University
13.
Parkinson, Jacqueline Cecile.
Microbial Induced Degradation in Synthetic Fiber Reinforced Concrete Samples in South Florida.
Degree: MS, 2019, Florida Atlantic University
URL: http://fau.digital.flvc.org/islandora/object/fau:41391
► Synthetic fiber reinforced concrete sample sets were exposed to two different environments. One set, of six samples, was exposed to filtered seawater in the lab…
(more)
▼ Synthetic fiber reinforced concrete sample sets were exposed to two different environments. One set, of six samples, was exposed to filtered seawater in the lab with wet and dry cycles, while the other set of samples was exposed, on a barge, to the marine environment, in the intracoastal waterways, at SeaTech. The samples were exposed for 8 months, and then removed for experimental and mechanical testing. Upon removal, the barge samples were photographed to observe surface organisms that were attached to each sample. The barge samples, after cleaning, were then exposed to UV light to observe surface bacteria. The barge samples were also taken to Harbor Branch facility for DNA testing, and then sent in for sequencing. This sequencing was used to identify the organisms that were present inside the concrete samples. An Indirect Tensile Strength Test, IDT, was performed on both sets of samples to observe the first crack, max load, and fracture toughness of each sample. The Barge samples had a lower first crack, max load, and fracture toughness, which means that it took less force to break these samples, than the Seawater samples. As the fiber content increased, the Seawater samples grew stronger, while the Barge samples grew weaker. Also, as the fiber content increased, the biodiversity found on the surface of the Barge samples increased as well.
2019
Degree granted:
Collection: FAU
Advisors/Committee Members: Presuel-Moreno, Francisco (Thesis advisor), Florida Atlantic University (Degree grantor), College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering.
Subjects/Keywords: Fiber-reinforced concrete; Florida; Concrete – Deterioration; Microbes
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Parkinson, J. C. (2019). Microbial Induced Degradation in Synthetic Fiber Reinforced Concrete Samples in South Florida. (Masters Thesis). Florida Atlantic University. Retrieved from http://fau.digital.flvc.org/islandora/object/fau:41391
Chicago Manual of Style (16th Edition):
Parkinson, Jacqueline Cecile. “Microbial Induced Degradation in Synthetic Fiber Reinforced Concrete Samples in South Florida.” 2019. Masters Thesis, Florida Atlantic University. Accessed January 17, 2021.
http://fau.digital.flvc.org/islandora/object/fau:41391.
MLA Handbook (7th Edition):
Parkinson, Jacqueline Cecile. “Microbial Induced Degradation in Synthetic Fiber Reinforced Concrete Samples in South Florida.” 2019. Web. 17 Jan 2021.
Vancouver:
Parkinson JC. Microbial Induced Degradation in Synthetic Fiber Reinforced Concrete Samples in South Florida. [Internet] [Masters thesis]. Florida Atlantic University; 2019. [cited 2021 Jan 17].
Available from: http://fau.digital.flvc.org/islandora/object/fau:41391.
Council of Science Editors:
Parkinson JC. Microbial Induced Degradation in Synthetic Fiber Reinforced Concrete Samples in South Florida. [Masters Thesis]. Florida Atlantic University; 2019. Available from: http://fau.digital.flvc.org/islandora/object/fau:41391

Florida International University
14.
Li, Jiaojiao.
Arsenic Biotransformations in Microbes and Humans, and Catalytic Properties of Human AS3MT Variants.
Degree: PhD, Biomedical Sciences, 2017, Florida International University
URL: https://digitalcommons.fiu.edu/etd/3460
;
10.25148/etd.FIDC001934
;
FIDC001934
► Arsenic is the most pervasive environmental toxic substance. As a consequence of its ubiquity, nearly every organism has genes for resistance to inorganic arsenic.…
(more)
▼ Arsenic is the most pervasive environmental toxic substance. As a consequence of its ubiquity, nearly every organism has genes for resistance to inorganic arsenic. In one project I examined the role of glutaredoxin 2 (Grx2) in reduction of arsenate to arsenite. I demonstrated that Grx2 has both glutaredoxin thiol transfer activity and glutathione S-transferase (GST) activity. In a second project investigated arsenic resistance in a microbiome organism. I discovered that the human gut microflora
B. vulgatus has eight continuous genes in its genome and these genes form an arsenical-inducible transcriptional unit. In two other projects I investigated the properties of two As(III) S-adenosylmethionine (SAM) methyltransferase (ArsM in
microbes and AS3MT in animals). In this project we demonstrate that most fungal species have ArsM orthologs with only three conserved cysteine residues, and AfArsM from
Aspergillus fumigatus methylates only MAs(III) and not As(III). For human, arsenic methylation process is thought to be protective from acute high-level arsenic exposure. However, with long term low-level exposure, hAS3MT is thought to produce intracellular methylarsenite (MAs(III)) and dimethylarsenite (DMAs(III)), which are considerably more toxic than inorganic As(III) and may contribute to arsenic-related diseases. Several single nucleotide polymorphisms (SNPs) in putative regulatory elements of the hAS3MT gene have been shown to be protective. In contrast, three previously identified exonic SNPs (R173W, M287T and T306I) may be deleterious. I identified five additional intragenic variants in hAS3MT (H51R, C61W, I136T, W203C and R251H). I purified the eight polymorphic hAS3MT proteins and characterized their enzymatic properties. Each enzyme had low methylation activity through decreased affinity for substrate, lower overall rates of catalysis and/or lower stability. I propose that amino acid substitutions in hAS3MT with decreased catalytic activity lead to detrimental responses to environmental arsenic and may increase the risk of arsenic-related diseases.
Advisors/Committee Members: Barry P. Rosen, Jeffrey Boyd, Toby G. Rossman, Yuan Liu, Masafumi Yoshinaga.
Subjects/Keywords: Arsenic; Human AS3MT; Polymorphisms; Methyltransferase; Microbes
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Li, J. (2017). Arsenic Biotransformations in Microbes and Humans, and Catalytic Properties of Human AS3MT Variants. (Doctoral Dissertation). Florida International University. Retrieved from https://digitalcommons.fiu.edu/etd/3460 ; 10.25148/etd.FIDC001934 ; FIDC001934
Chicago Manual of Style (16th Edition):
Li, Jiaojiao. “Arsenic Biotransformations in Microbes and Humans, and Catalytic Properties of Human AS3MT Variants.” 2017. Doctoral Dissertation, Florida International University. Accessed January 17, 2021.
https://digitalcommons.fiu.edu/etd/3460 ; 10.25148/etd.FIDC001934 ; FIDC001934.
MLA Handbook (7th Edition):
Li, Jiaojiao. “Arsenic Biotransformations in Microbes and Humans, and Catalytic Properties of Human AS3MT Variants.” 2017. Web. 17 Jan 2021.
Vancouver:
Li J. Arsenic Biotransformations in Microbes and Humans, and Catalytic Properties of Human AS3MT Variants. [Internet] [Doctoral dissertation]. Florida International University; 2017. [cited 2021 Jan 17].
Available from: https://digitalcommons.fiu.edu/etd/3460 ; 10.25148/etd.FIDC001934 ; FIDC001934.
Council of Science Editors:
Li J. Arsenic Biotransformations in Microbes and Humans, and Catalytic Properties of Human AS3MT Variants. [Doctoral Dissertation]. Florida International University; 2017. Available from: https://digitalcommons.fiu.edu/etd/3460 ; 10.25148/etd.FIDC001934 ; FIDC001934

University of Washington
15.
Tran, Vivian.
Validation of a Sponge Processing Method for Characterizing Microbes in the Bullitt Center.
Degree: 2016, University of Washington
URL: http://hdl.handle.net/1773/35192
► Background: The Bullitt Center is a six-story, 50,000 square-foot green building that emphasizes energy efficiency and environmental performance based on design and operation. Microorganisms found…
(more)
▼ Background: The Bullitt Center is a six-story, 50,000 square-foot green building that emphasizes energy efficiency and environmental performance based on design and operation. Microorganisms found in indoor surface environments most often come from human sources or by transport from the outdoor environment. Quantity and location of surface
microbes can change due to re-aerosolization with human activity and building air movement. Few studies have been performed on surface
microbes in green buildings. The aims are 1) Validate a sponge processing method based on literature review and 2) Characterize microbial populations from surfaces in the Bullitt building. Methods: Three processing methods (shaker table, hand massage, and stomacher 400 circulator) were evaluated for microbial recovery from 3MTM sampling sponges with 10 ml neutralizing buffer. Sponges were spiked with 1 to 3E8 E. coli B cells and cells recovered by each method. DNA from recovered cells was extracted (MO BIO PowerSoilTM DNA Isolation Kit), quantified by nanodrop (ND-3300) using picogreen, and E. coli specific targets amplified by qPCR (with fluorescent probe). The best processing method was determined by examining both percent recoveries of CFU and C(t) values. The Bullitt surface samples were processed by the most efficient elution method followed by DNA extraction, nanodrop quantification of nucleic acid, and Illumina 16S metagenomic sequencing to characterize the
microbes that were present. Results: Hand massage was determined to be the most effective elution method based on the highest and most consistent calculated percent recoveries of CFUs ranging on average from 32.2-69.3%. C(t) values gave inconsistent results using undiluted nucleic acid, but tighter results using 10-fold dilutions of the sponge extractions ranging from (16.7-35.8% for shaker table, 15.3-42.1% for hand massage, and 25.7-52.7% for stomacher) suggesting the presence of inhibitors. Throughout the study, nucleic acid results ranged from (0-5121.5 ng/ml). The highest nucleic acid values were observed in June ranging from (78.1-5121.5 ng/ml). Results from Illumina 16S (>10% OTUs) showed changes in microbial populations over time at each location. Results from all 16S data showed that the high bloom conditions for Streptophyta were observed in April 2014 with a percent abundance as high as 93.9%. The high bloom conditions for Sandaracinobacter were observed in August/November 2013 with a percent abundance as high as 40.1%, then decreases significantly for the rest of the timeline. Data on the top ten
microbes based on the number of reads in each sample showed high abundance levels of environment associated
microbes and distinct levels of human associated
microbes in June. Conclusion: Validation of hand massage as a sponge processing method was the best compared to the shaker table and stomacher methods and can be used for future studies to characterize microbial populations. Nanodrop and Illumina 16S results provided information in the change of quantity of surface
microbes at each…
Advisors/Committee Members: Meschke, John S (advisor).
Subjects/Keywords: Bullitt; Microbes; Sponge; Environmental health; environmental health
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Tran, V. (2016). Validation of a Sponge Processing Method for Characterizing Microbes in the Bullitt Center. (Thesis). University of Washington. Retrieved from http://hdl.handle.net/1773/35192
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Tran, Vivian. “Validation of a Sponge Processing Method for Characterizing Microbes in the Bullitt Center.” 2016. Thesis, University of Washington. Accessed January 17, 2021.
http://hdl.handle.net/1773/35192.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Tran, Vivian. “Validation of a Sponge Processing Method for Characterizing Microbes in the Bullitt Center.” 2016. Web. 17 Jan 2021.
Vancouver:
Tran V. Validation of a Sponge Processing Method for Characterizing Microbes in the Bullitt Center. [Internet] [Thesis]. University of Washington; 2016. [cited 2021 Jan 17].
Available from: http://hdl.handle.net/1773/35192.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Tran V. Validation of a Sponge Processing Method for Characterizing Microbes in the Bullitt Center. [Thesis]. University of Washington; 2016. Available from: http://hdl.handle.net/1773/35192
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Technology, Sydney
16.
Bibiloni Isaksson, Jaime.
Biogeography of photoheterotrophic microbes in coastal waters of Australia.
Degree: 2016, University of Technology, Sydney
URL: http://hdl.handle.net/10453/120191
► Marine microbes control the flux of energy and chemicals in the ocean and therefore mediate ocean productivity and biogeochemistry, which ultimately sustains marine life and…
(more)
▼ Marine microbes control the flux of energy and chemicals in the ocean and therefore mediate ocean productivity and biogeochemistry, which ultimately sustains marine life and controls global climate. A numerically and functionally important group of marine microbes, for which there is currently a significant gap in knowledge regarding their ecology and biogeography, are the photoheterotrophic bacteria. These microbes, including both Aerobic Anoxygenic Phototrophic Bacteria (AAnPB) and proteorhodopsin based phototrophic bacteria and Archaea (PRBA) comprise up to 70% of microbial communities within surface waters of the ocean. Capable of gaining energy from light-induced proton translocation and from the oxidation of organic material, these often highly abundant bacteria have been proposed to significantly influence marine biogeochemistry and trophodynamics. However, the environmental (i.e. physicochemical, seasonal, oceanographic) factors influencing the abundance and diversity of these organisms are currently poorly defined, particularly within the often highly productive waters of the Southern Hemisphere. The aim of this thesis was to examine changes in photoheterotrophic community abundance and composition in coastal waters of Australia and identify the key environmental influences on the ecology of these microbes. Samples collected from a combination of oceanographic research voyages and time-series sampling regimes were analysed using both amplicon sequencing approaches and quantitative PCR targeting pufM and proteorhodopsin genes to characterise AAnPB and PRBA populations respectively. High temporal resolution analysis of photohetetrophic bacterial population dynamics in the coastal waters of Australia indicated seasonality in the abundance and diversity of these groups. Along the eastern coast of Australia, AAnPB abundance was highly variable, with pufM gene copies ranging from 1.1 x 10² to 1.4 x 10⁵ mL⁻¹, and positively correlated with day length and solar radiation. pufM gene amplicon sequencing revealed that the majority of sequences were closely related to those obtained previously in other environments, suggesting that key AAnPB groups are widely distributed across similar environments globally. Temperature was a major structuring factor for AAnPB assemblages across large spatial scales, correlating positively with richness and Gammaproteobacteria (phylogroup K) abundance, but negatively with Roseobacter-clade (phylogroup E) abundance, with temperatures between 16-18 °C identified as a potential transition zone between these groups. Coastal PRBA assemblages were also dynamic in both space and time, with diversity correlated to indicators of waterbody oligotrophy including positively to temperature, Secchi depth and Prochlorococcus cell abundance and negatively to phosphate concentration. Shifts in taxonomic composition were best explained by temperature and day length. Seasonality in taxonomic structure was accompanied by temporal variability in proteorhodopsin spectral tuning. Finally, we provide evidence…
Subjects/Keywords: Bacteria.; Photoheterotrophic bateria.; Marine microbes.; Marine biogeochemistry.
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Bibiloni Isaksson, J. (2016). Biogeography of photoheterotrophic microbes in coastal waters of Australia. (Thesis). University of Technology, Sydney. Retrieved from http://hdl.handle.net/10453/120191
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Bibiloni Isaksson, Jaime. “Biogeography of photoheterotrophic microbes in coastal waters of Australia.” 2016. Thesis, University of Technology, Sydney. Accessed January 17, 2021.
http://hdl.handle.net/10453/120191.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Bibiloni Isaksson, Jaime. “Biogeography of photoheterotrophic microbes in coastal waters of Australia.” 2016. Web. 17 Jan 2021.
Vancouver:
Bibiloni Isaksson J. Biogeography of photoheterotrophic microbes in coastal waters of Australia. [Internet] [Thesis]. University of Technology, Sydney; 2016. [cited 2021 Jan 17].
Available from: http://hdl.handle.net/10453/120191.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Bibiloni Isaksson J. Biogeography of photoheterotrophic microbes in coastal waters of Australia. [Thesis]. University of Technology, Sydney; 2016. Available from: http://hdl.handle.net/10453/120191
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Tasmania
17.
Hancock, AM.
Effects of ocean acidification on Antarctic microbial communities.
Degree: 2019, University of Tasmania
URL: https://eprints.utas.edu.au/33347/1/Hancock__whole_thesis.pdf
;
Hancock,
AM
ORCID:
0000-0001-6049-5592
<https://orcid.org/0000-0001-6049-5592>
2019
,
'Effects
of
ocean
acidification
on
Antarctic
microbial
communities',
PhD
thesis,
University
of
Tasmania.
► Antarctic waters are amongst the most vulnerable in the world to ocean acidification due to their cold temperatures, naturally low levels of calcium carbonate and…
(more)
▼ Antarctic waters are amongst the most vulnerable in the world to ocean acidification due to their cold temperatures, naturally low levels of calcium carbonate and upwelling that brings deep CO(2)-rich waters to the surface. A meta-analysis demonstrated groups of Antarctic marine biota in waters south of 60°S have a range of tolerances to ocean acidification. Invertebrates and phytoplankton showed negative effects above 500 μatm and 1000 μatm CO(2) respectively, while bacteria appear tolerant to elevated CO(2). Phytoplankton studied as part of a natural microbial community were found to be more sensitive than those studied as a single species in culture. This highlights the importance of community and ecosystem level studies, which incorporate the interaction and competition among species and trophic levels, to accurately assess the effects of ocean acidification on the Antarctic ecosystem.
Antarctic marine microbes (comprising phytoplankton, protozoa and bacteria) drive ocean productivity, nutrient cycling and mediate trophodynamics and the biological pump. While they appear vulnerable to changes in ocean chemistry, little is known about the nature and magnitude of their responses to ocean acidification, especially for natural communities. To address this lack of information, a six level, dose-response ocean acidification experiment was conducted in Prydz Bay, East Antarctica, using 650 L incubation tanks (minicosms). The minicosms were filled with Antarctic nearshore water and adjusted to a gradient of carbon dioxide (CO(2)) from 343 to 1641 μatm. Microscopy and phylogenetic marker gene sequence analysis found the microbial community composition altered at CO(2) levels above approximately 1000 μatm. The CO(2)- induced responses of icroeukaryotes (>20 μm) and nanoeukaryotes (2 to 20 μm) were taxon-specific. For diatoms the response of taxa was related to cell size with micro-sized diatoms (>20 μm) increasing in abundance with moderate CO(2) (506 to 634 μatm), while above this level their abundance declined. In contrast, nano-size diatoms (<20 μm) tolerated elevated CO(2). Like large diatoms, Phaeocystis antarctica increased in abundance between 343 to 634 μatm CO(2) but fell at higher levels. 18S and 16S rDNA sequencing showed that picoeukaryotic and prokaryotic composition was unaffected by CO(2), despite having higher abundances at CO(2) levels 1634 μatm. This was likely due to the lower abundance of heterotrophic nanoflagellates at CO(2) levels exceeding 953 μatm, which reduced the top-down control of their pico- and nanoplanktonic prey. As a result of the differences in the tolerance of individual taxa/size categories, CO(2) caused a significant change in the microbial community structure to one dominated by nano-sized diatoms, picoeukaryotes and prokaryotes.
Based on the CO(2)-induced changes in the microbial community, modelling was performed to investigate the future effects of different levels of elevated CO(2) on the structure and function of microbial…
Subjects/Keywords: Antarctic; microbes; ocean acidification; composition; minicosm
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Hancock, A. (2019). Effects of ocean acidification on Antarctic microbial communities. (Thesis). University of Tasmania. Retrieved from https://eprints.utas.edu.au/33347/1/Hancock__whole_thesis.pdf ; Hancock, AM ORCID: 0000-0001-6049-5592 <https://orcid.org/0000-0001-6049-5592> 2019 , 'Effects of ocean acidification on Antarctic microbial communities', PhD thesis, University of Tasmania.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Hancock, AM. “Effects of ocean acidification on Antarctic microbial communities.” 2019. Thesis, University of Tasmania. Accessed January 17, 2021.
https://eprints.utas.edu.au/33347/1/Hancock__whole_thesis.pdf ; Hancock, AM ORCID: 0000-0001-6049-5592 <https://orcid.org/0000-0001-6049-5592> 2019 , 'Effects of ocean acidification on Antarctic microbial communities', PhD thesis, University of Tasmania..
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Hancock, AM. “Effects of ocean acidification on Antarctic microbial communities.” 2019. Web. 17 Jan 2021.
Vancouver:
Hancock A. Effects of ocean acidification on Antarctic microbial communities. [Internet] [Thesis]. University of Tasmania; 2019. [cited 2021 Jan 17].
Available from: https://eprints.utas.edu.au/33347/1/Hancock__whole_thesis.pdf ; Hancock, AM ORCID: 0000-0001-6049-5592 <https://orcid.org/0000-0001-6049-5592> 2019 , 'Effects of ocean acidification on Antarctic microbial communities', PhD thesis, University of Tasmania..
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Hancock A. Effects of ocean acidification on Antarctic microbial communities. [Thesis]. University of Tasmania; 2019. Available from: https://eprints.utas.edu.au/33347/1/Hancock__whole_thesis.pdf ; Hancock, AM ORCID: 0000-0001-6049-5592 <https://orcid.org/0000-0001-6049-5592> 2019 , 'Effects of ocean acidification on Antarctic microbial communities', PhD thesis, University of Tasmania.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Iceland
18.
Guðný Inga Ófeigsdóttir 1976-.
Production and utilization of biomass with microbes
.
Degree: 2009, University of Iceland
URL: http://hdl.handle.net/1946/4145
► The world of microbes is the topic of this essay and explanations on how important they are for modern community. Microbes can for example obtain…
(more)
▼ The world of microbes is the topic of this essay and explanations on how important they are for modern community. Microbes can for example obtain energy for growth and produced microbial biomass that contains a large percentage of high grade protein. They can also by a fermentive pathway in the metabolism of glucose, produced ethanol. Utilization of microbes is a possible solution of some environmental issues that are hazardous for life on earth. The working process of metabolism in microbes is explained along with the difference between fermentation and respiration. Biomass is essential for various reasons. In this essay the forms of biomass are explained along with how it is formed and utilized.
Subjects/Keywords: Lífefnafræði;
Fermentation;
Microbes
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
1976-, G. I. . (2009). Production and utilization of biomass with microbes
. (Thesis). University of Iceland. Retrieved from http://hdl.handle.net/1946/4145
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
1976-, Guðný Inga Ófeigsdóttir. “Production and utilization of biomass with microbes
.” 2009. Thesis, University of Iceland. Accessed January 17, 2021.
http://hdl.handle.net/1946/4145.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
1976-, Guðný Inga Ófeigsdóttir. “Production and utilization of biomass with microbes
.” 2009. Web. 17 Jan 2021.
Vancouver:
1976- GI. Production and utilization of biomass with microbes
. [Internet] [Thesis]. University of Iceland; 2009. [cited 2021 Jan 17].
Available from: http://hdl.handle.net/1946/4145.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
1976- GI. Production and utilization of biomass with microbes
. [Thesis]. University of Iceland; 2009. Available from: http://hdl.handle.net/1946/4145
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
19.
Carson, Christine Michelle.
Grassland
soil microbial responses to long-term management of N
availability.
Degree: MS, Department of
Biology, 2017, Kansas State University
URL: http://hdl.handle.net/2097/36228
► Anthropogenic actions have significantly increased biological nitrogen (N) availability on a global scale. In tallgrass prairies, this phenomenon is exacerbated by land management changes, such…
(more)
▼ Anthropogenic actions have significantly increased
biological nitrogen (N) availability on a global scale. In
tallgrass prairies, this phenomenon is exacerbated by land
management changes, such as fire suppression. Historically,
tallgrass prairie fire removed N through volatilization, but fire
suppression has contributed to increased soil N availability as
well as woody encroachment. Because soil
microbes respond to N
availability and plant growth, these changes may alter microbial
composition and important microbially-mediated functions. Grassland
management affects the soil environment on multiple time scales
including short (fertilization or fire event), seasonal (growing
vs. non-growing season), and long-term (decadal plant turnover and
nutrient accumulation), therefore my goal was to understand
community variability at different time scales affecting the
population and community dynamics of soil
microbes. I predicted
soil
microbes would be sensitive to environmental changes at all
time scales, seasonal variation would reflect increased plant
rhizodeposit-supported populations during summer and decomposers
during winter, and long-term fire suppression and chronic
fertilization would drive soil microbial community turnover
associated with accumulation of plant litter and N.
To address
these predictions, soils were collected from the Belowground Plot
Experiment (BGPE) at Konza Prairie Biological Station: a 30-y
factorial field manipulation of N fertilization and burning.
Surface soils (0-15 cm) were sampled monthly between Nov 2014 – Dec
2015, including one week post-fire (April) and post-fertilization
(June). Genomic DNA was extracted from each sample for qPCR and PCR
for Illumina MiSeq library sequencing of the prokaryotic 16S rRNA
gene and fungal ITS, to estimate population and community dynamics
of soil
microbes. Soil environmental characteristics and plant
communities were measured in July 2015 to evaluate correlations
between plant and microbial communities, and environmental
variability.
Soil microbial responses to short-term
fire/fertilization events were minimal, while microbial population
sizes fluctuate seasonally and synchronously, and microbial
community composition varied more with management history than at
shorter time scales. Bacterial populations increased 10x during
growing-season plant rhizodeposition, while fungal populations were
less dynamic, but decreased in fall, possibly reflecting a shift to
subsistence on soil organic matter. In contrast, microbial
community composition was seasonally stable, but distinct between
long-term management treatments, which may indicate accumulation of
niche-defining plant or soil properties over decades. Prokaryotic
communities responded to altered N availability via both
fertilization and loss due to fire, with the highest abundance of
"copiotrophic" (r-selected) taxa in unburned, fertilized soils.
Fungal communities responded to N fertilization with higher
abundance of arbuscular mycorrhizal fungi, pathogens, and
saprotrophs, possibly due to changes in…
Advisors/Committee Members: Lydia H. Zeglin.
Subjects/Keywords: Soil
microbes;
Nitrogen;
Communities;
Grassland;
Management
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Carson, C. M. (2017). Grassland
soil microbial responses to long-term management of N
availability. (Masters Thesis). Kansas State University. Retrieved from http://hdl.handle.net/2097/36228
Chicago Manual of Style (16th Edition):
Carson, Christine Michelle. “Grassland
soil microbial responses to long-term management of N
availability.” 2017. Masters Thesis, Kansas State University. Accessed January 17, 2021.
http://hdl.handle.net/2097/36228.
MLA Handbook (7th Edition):
Carson, Christine Michelle. “Grassland
soil microbial responses to long-term management of N
availability.” 2017. Web. 17 Jan 2021.
Vancouver:
Carson CM. Grassland
soil microbial responses to long-term management of N
availability. [Internet] [Masters thesis]. Kansas State University; 2017. [cited 2021 Jan 17].
Available from: http://hdl.handle.net/2097/36228.
Council of Science Editors:
Carson CM. Grassland
soil microbial responses to long-term management of N
availability. [Masters Thesis]. Kansas State University; 2017. Available from: http://hdl.handle.net/2097/36228

Robert Gordon University
20.
Burns, Joshua.
Exploitation of underused Streptomyces through a combined metabolomics-genomics workflow to enhance natural product diversity.
Degree: PhD, 2020, Robert Gordon University
URL: https://rgu-repository.worktribe.com/output/950245
;
https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.809652
► The genus Streptomyces is the source of approximately two-thirds of all clinically-used antibiotics. Despite being the source of so many specialised metabolites, genomic analysis indicates…
(more)
▼ The genus Streptomyces is the source of approximately two-thirds of all clinically-used antibiotics. Despite being the source of so many specialised metabolites, genomic analysis indicates that most Streptomyces strains have the potential to produce around twenty-five bioactive metabolites, some of which may be the basis of novel therapies. This makes culture collections of Streptomyces spp. an easily accessible (but under-used) resource to mine for genomic and metabolomic variety. Therefore, the main aim of this project was to initiate exploitation of the culture collection at NCIMB Ltd., by expanding the available chemical space from under-utilised Streptomyces for the production of novel antibiotics. This primarily used a mixture of metabolomic and genomic methods. A high-throughput culture parameter screen was designed around multiple carbon sources, nitrogen sources and extraction sample times. This was tested on the model species S. coelicolor A3(2) to compare differences in the production of known specialised metabolites, using UPLC-MS to analyse crude extracts from growth on agar. Data was analysed using MZmine and putative metabolites were identified using freely-available MS/MS databases - primarily GNPS. This showed clear variation in production of nine identified metabolites - including deferoxamines, germicidins, undecylprodigiosin and coelichelin - as a result of different culture parameters. Therefore, the screen successfully expanded the available chemical space, so was applied to non-model Streptomyces strains. The screen was used to compare the total metabolomic variety produced by three Streptomyces, isolated from different environments, in order to select a strain for further investigation. Comparing metabolomic features using principal component analysis showed the Costa Rican soil isolate S. costaricanus to produce the most variety versus the other two Streptomyces strains. The metabolite family most responsible for principal component separation was identified as the actinomycins. Scale-up of both agar and broth culture was used for metabolite dereplication and bioassays against multidrug resistant Acinetobacter baumannii, which is one of the bacteria on the World Health Organisation's list of pathogens that most urgently require new therapies. Fractions were derived from broth culture supernatant and agar crude extract by flash chromatography, resulting in semi-purified fractions. The predominant metabolite families in fractions were actinomycins and deferoxamines, which were further split by polarity into separate fractions. This resulted in rapid purification of metabolites, with one fraction comprising 80% deferoxamine B by weight. Fractions were tested against A. baumannii using the 2,3-bis (2-methoxy-4-nitro-5-sulfophenyl)-5-[(phenylamino)carbonyl]-2H-tetrazolium hydroxide (XTT) assay, which showed partial inhibition of growth at 50 μg/ml. Examining the bioactive fractions showed potentially novel minor peaks that could be responsible for bioactivity. A high-quality full genome of S.…
Subjects/Keywords: Streptomyces; Antibiotics; Bacterial culture screening; Microbes
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Burns, J. (2020). Exploitation of underused Streptomyces through a combined metabolomics-genomics workflow to enhance natural product diversity. (Doctoral Dissertation). Robert Gordon University. Retrieved from https://rgu-repository.worktribe.com/output/950245 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.809652
Chicago Manual of Style (16th Edition):
Burns, Joshua. “Exploitation of underused Streptomyces through a combined metabolomics-genomics workflow to enhance natural product diversity.” 2020. Doctoral Dissertation, Robert Gordon University. Accessed January 17, 2021.
https://rgu-repository.worktribe.com/output/950245 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.809652.
MLA Handbook (7th Edition):
Burns, Joshua. “Exploitation of underused Streptomyces through a combined metabolomics-genomics workflow to enhance natural product diversity.” 2020. Web. 17 Jan 2021.
Vancouver:
Burns J. Exploitation of underused Streptomyces through a combined metabolomics-genomics workflow to enhance natural product diversity. [Internet] [Doctoral dissertation]. Robert Gordon University; 2020. [cited 2021 Jan 17].
Available from: https://rgu-repository.worktribe.com/output/950245 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.809652.
Council of Science Editors:
Burns J. Exploitation of underused Streptomyces through a combined metabolomics-genomics workflow to enhance natural product diversity. [Doctoral Dissertation]. Robert Gordon University; 2020. Available from: https://rgu-repository.worktribe.com/output/950245 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.809652
21.
Li, Mengmeng.
Modeling Nitrogen and Energy Metabolism in the Bovine.
Degree: PhD, Animal Sciences, Dairy, 2019, Virginia Tech
URL: http://hdl.handle.net/10919/87090
► The purpose of this research was to improve ruminal nutrient metabolism and nutrient digestion representations in the Molly cow model. First, the model accuracy and…
(more)
▼ The purpose of this research was to improve ruminal nutrient metabolism and nutrient digestion representations in the Molly cow model. First, the model accuracy and precision were assessed using a dataset including 229 studies (n = 938 treatments) conducted with dairy and beef cattle. The model evaluation results indicated the mechanisms encoded in the model relative to ruminal and total tract nutrient digestion are properly represented. However, ruminal pH was very poorly represented in the model with a RMSE of 4.6% and a concordance correlation coefficient (CCC) of 0.0. Although VFA concentrations had negligible mean (2.5% of MSE) and slope (6.8% of MSE) bias, the CCC was 0.28 implying that further modifications with respect to VFA production and absorption are required to improve model precision. As identified by the residual analyses, the representations of N recycling between blood and the gut were improved by considering ruminal ammonia outflow, intestinal urea entry, microbial protein synthesis in the hindgut, and fecal urea N excretion in the model. Observations of total urea entry, gut urea entry, and urinary urea elimination rates were collected from 15 published urea kinetics studies were used to derive related parameters. After the modifications, prediction errors for ruminal outflows of total N, microbial N, and non-ammonia non-microbial N were 39.5, 27.8 and 35.9% of the respective observed mean values. Prediction errors of each were approximately 10% units less than the corresponding values before model modifications and fitting due primarily to decreased slope bias. The revised model predicted ruminal ammonia and blood urea concentrations with substantially decreased overall error and reductions in slope and mean bias. After that, ammonia concentration as a driver was added to the pH equation, and a dataset assembled from the literature containing 284 peer reviewed studies with 1223 treatment means was used to derive parameter estimates for ruminal metabolism and nutrient digestions. Refitting the parameters significantly improved the accuracy and precision of the model predictions for ruminal nutrient outflow (ADF, NDF, total N, microbial N, non-ammonia N, and non-ammonia, non-microbial N), ammonia concentrations, and fecal nutrient outflow (protein, ADF, and NDF). Therefore, the improved model can be used to simulate nutrient degradation and digestion in the bovine. Although minor mean and slope bias were observed for ruminal pH and VFA concentrations, the small values for concordance correlations indicated much of the observed variation in these variables remains unexplained. To further explain variance in ruminal metabolism and understand how ruminal pH affects the microbial community, expression of carbohydrate-active enzyme transcripts (CAZymes), fiber degradation, and short chain fatty acid (SCFA) concentrations, six cannulated Holstein heifers with an initial BW of 362 ± 22 kg (mean ± SD) were subjected to 2 treatments in a cross-over design. We observed 19 bacterial genera and 4 protozoal…
Advisors/Committee Members: Hanigan, Mark Daniel (committeechair), Guan, Leluo (committee member), White, Robin (committee member), Cockrum, Rebecca (committee member).
Subjects/Keywords: cattle; microbes; nutrient digestion; rumen metabolism
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Li, M. (2019). Modeling Nitrogen and Energy Metabolism in the Bovine. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/87090
Chicago Manual of Style (16th Edition):
Li, Mengmeng. “Modeling Nitrogen and Energy Metabolism in the Bovine.” 2019. Doctoral Dissertation, Virginia Tech. Accessed January 17, 2021.
http://hdl.handle.net/10919/87090.
MLA Handbook (7th Edition):
Li, Mengmeng. “Modeling Nitrogen and Energy Metabolism in the Bovine.” 2019. Web. 17 Jan 2021.
Vancouver:
Li M. Modeling Nitrogen and Energy Metabolism in the Bovine. [Internet] [Doctoral dissertation]. Virginia Tech; 2019. [cited 2021 Jan 17].
Available from: http://hdl.handle.net/10919/87090.
Council of Science Editors:
Li M. Modeling Nitrogen and Energy Metabolism in the Bovine. [Doctoral Dissertation]. Virginia Tech; 2019. Available from: http://hdl.handle.net/10919/87090

Oklahoma State University
22.
Santiago Torres, Alejandra.
Significance of Microbial Binding in the Formation and Stabilization of Carbonate Forereef Slope Deposits.
Degree: Geology, 2019, Oklahoma State University
URL: http://hdl.handle.net/11244/323436
► Although the effect of microbial binding in slope stabilization and lithification is well documented in Cenozoic examples of steep carbonate slopes, its significance and relationship…
(more)
▼ Although the effect of microbial binding in slope stabilization and lithification is well documented in Cenozoic examples of steep carbonate slopes, its significance and relationship with syndepositional abiotic marine cements in Paleozoic reef systems and steep carbonate slope deposits has not yet been fully determined or understood. Given the growing number of studies supporting the role of
microbes in the precipitation of micrite, as well as binding and trapping, this study aims to describe microbial fabrics that may indicate in situ microbial production and syndepositional lithification. Results from this project will provide insights into the relationship between microbial binding and syndepositional abiotic marine cements in ancient reef systems in order to explain the early lithification and evolution of steep carbonate slopes such as forereef slopes, and further develop the fundamentals of sedimentology and diagenesis of Silurian (Niagaran) reefs in and around the Michigan Basin.
Advisors/Committee Members: Grammer, G. Michael (advisor), Gregg, Jay (committee member), Prezbindowski, Dennis (committee member).
Subjects/Keywords: carbonates; cements; forereefs; microbes; microbial binding; silurian
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Santiago Torres, A. (2019). Significance of Microbial Binding in the Formation and Stabilization of Carbonate Forereef Slope Deposits. (Thesis). Oklahoma State University. Retrieved from http://hdl.handle.net/11244/323436
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Santiago Torres, Alejandra. “Significance of Microbial Binding in the Formation and Stabilization of Carbonate Forereef Slope Deposits.” 2019. Thesis, Oklahoma State University. Accessed January 17, 2021.
http://hdl.handle.net/11244/323436.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Santiago Torres, Alejandra. “Significance of Microbial Binding in the Formation and Stabilization of Carbonate Forereef Slope Deposits.” 2019. Web. 17 Jan 2021.
Vancouver:
Santiago Torres A. Significance of Microbial Binding in the Formation and Stabilization of Carbonate Forereef Slope Deposits. [Internet] [Thesis]. Oklahoma State University; 2019. [cited 2021 Jan 17].
Available from: http://hdl.handle.net/11244/323436.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Santiago Torres A. Significance of Microbial Binding in the Formation and Stabilization of Carbonate Forereef Slope Deposits. [Thesis]. Oklahoma State University; 2019. Available from: http://hdl.handle.net/11244/323436
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Penn State University
23.
Cheesman, Hilary Kessler.
Plant-associated Microbes For The Sustainable Production Of Faba Bean (vicia Faba L.) With Applications In South America
.
Degree: 2014, Penn State University
URL: https://submit-etda.libraries.psu.edu/catalog/22602
► Faba bean is an important nitrogen-fixing crop in the Andes. It is also an essential component of the diet for many peasants in this region,…
(more)
▼ Faba bean is an important nitrogen-fixing crop in the Andes. It is also an essential component of the diet for many peasants in this region, as it is a source of calcium and protein. Faba bean production is limited by disease and drought in Bolivia. The major disease that affects faba production and reduces yields in Bolivia is chocolate spot, caused by Botrytis species (B. cinerea, B. fabae and B. fabiopsis). When humidity levels reach at least 90% and air temperatures are between 15-22°C the disease can harshly limit the growth of the infected plant and lead to yield losses of 50-100% (Zhang et al., 2010). Growing conditions in Bolivia are extremely conducive for Botrytis disease progression. Seed treatments of Bacillus subtilis (GB122) and B. amyloquefaciens (GB99) reduce chocolate spot disease (in green house trials) and promote faba growth (field trials) in Pennsylvania. Using these seed treatments hold promise to reduce chocolate spot in Bolivia. Currently the Bolivian government has approved registration for production and use of various Bacillus species at PROINPA. These include B. subtilis and B. amyloliquefaciens strains that should be applied to faba seed in production fields across the Bolivian Andes.
Over 200 Botrytis spp. isolates were collected from symptomatic tissue on of faba bean in fields in Pennsylvania. Sixteen of these isolates were selected to represent culture morphological characteristics. In order to understand disease caused by Botrytis species in Pennsylvania a phylogenetic analysis with 16 Botrytis isolates was performed. Four gene regions were sequenced; Gylceraldehyde-3-phosphate dehydrogenase (G3PDH), Heat-shock protein-60 (HSP60), RNA-dependent, DNA-polymerase subunit-2 (RPB2) and Internal transcribed spacer region 4/5 (ITS). These gene regions were used to create 4 neighbor-joining trees in MEGA. The results of this analysis indicate that chocolate spot of faba bean in Pennsylvania is caused by two distinct species, B. fabiopsis and B. cinerea. Botrytis fabiopsis was the most common isolate found in PA field trials in 2 years (2011 and 2013). This is the first report of B. fabiopsis in Pennsylvania and the United States. Botrytis fabiopsis has similar culture growth characteristics to B. cinerea, however B. fabiopsis can only produce conidia from sclerotia (at near UV light) and on plant material. Botrytis cinerea can produce conidia from mycelium as well as sclerotia on plants.
Advisors/Committee Members: Beth Krueger Gugino, Thesis Advisor/Co-Advisor, Paul Anthony Backman, Thesis Advisor/Co-Advisor.
Subjects/Keywords: faba; sustainable agriculture; plant-associated microbes; Bacillus; Andes; Botrytis; faba; sustainable agriculture; plant-associated microbes; Bacillus; Andes; Botrytis
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Cheesman, H. K. (2014). Plant-associated Microbes For The Sustainable Production Of Faba Bean (vicia Faba L.) With Applications In South America
. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/22602
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Cheesman, Hilary Kessler. “Plant-associated Microbes For The Sustainable Production Of Faba Bean (vicia Faba L.) With Applications In South America
.” 2014. Thesis, Penn State University. Accessed January 17, 2021.
https://submit-etda.libraries.psu.edu/catalog/22602.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Cheesman, Hilary Kessler. “Plant-associated Microbes For The Sustainable Production Of Faba Bean (vicia Faba L.) With Applications In South America
.” 2014. Web. 17 Jan 2021.
Vancouver:
Cheesman HK. Plant-associated Microbes For The Sustainable Production Of Faba Bean (vicia Faba L.) With Applications In South America
. [Internet] [Thesis]. Penn State University; 2014. [cited 2021 Jan 17].
Available from: https://submit-etda.libraries.psu.edu/catalog/22602.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Cheesman HK. Plant-associated Microbes For The Sustainable Production Of Faba Bean (vicia Faba L.) With Applications In South America
. [Thesis]. Penn State University; 2014. Available from: https://submit-etda.libraries.psu.edu/catalog/22602
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universiteit Utrecht
24.
Koppelaar, E.
Intracellular recognition and clearance of microbes.
Degree: 2012, Universiteit Utrecht
URL: http://dspace.library.uu.nl:8080/handle/1874/250571
► Microbial recognition is mediated by pattern recognition receptors (PRRs). These germline-encoded receptors recognizing highly conserved microbial structures are essential for survival and are therefore not…
(more)
▼ Microbial recognition is mediated by pattern recognition receptors (PRRs). These germline-encoded receptors recognizing highly conserved microbial structures are essential for survival and are therefore not subjective to high frequent mutations. The recognition of these so-called pathogen-associated molecular patterns (PAMPs) enables the immune system to distinguish between self and non-self and induce the appropriate immune responses upon infection.
PRRs are located on extracellular surfaces, on intracellular membranes or in the cytosol. However, there will be specifically focused on receptors enabling intracellular recognition of
microbes. Furthermore, a newly identified intracellular killing mechanism by autophagy will be discussed. This process is important in the metabolic homeostasis of cells, and it was recently found to be important in the clearance of bacteria as well. Interestingly, PRRs are able to influence autophagy, contributing to the newly established link between innate immunity and the evolutionary highly conserved process of autophagy.
Advisors/Committee Members: Bestebroer, J..
Subjects/Keywords: Intracellular; pattern recognition receptors; microbes; clearance; induction; autophagy
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APA ·
Chicago ·
MLA ·
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Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Koppelaar, E. (2012). Intracellular recognition and clearance of microbes. (Masters Thesis). Universiteit Utrecht. Retrieved from http://dspace.library.uu.nl:8080/handle/1874/250571
Chicago Manual of Style (16th Edition):
Koppelaar, E. “Intracellular recognition and clearance of microbes.” 2012. Masters Thesis, Universiteit Utrecht. Accessed January 17, 2021.
http://dspace.library.uu.nl:8080/handle/1874/250571.
MLA Handbook (7th Edition):
Koppelaar, E. “Intracellular recognition and clearance of microbes.” 2012. Web. 17 Jan 2021.
Vancouver:
Koppelaar E. Intracellular recognition and clearance of microbes. [Internet] [Masters thesis]. Universiteit Utrecht; 2012. [cited 2021 Jan 17].
Available from: http://dspace.library.uu.nl:8080/handle/1874/250571.
Council of Science Editors:
Koppelaar E. Intracellular recognition and clearance of microbes. [Masters Thesis]. Universiteit Utrecht; 2012. Available from: http://dspace.library.uu.nl:8080/handle/1874/250571

University of California – Irvine
25.
Albright, Michaeline Burr Nelson.
Disentangling the relationship between bacterial diversity and its functioning: plant litter communities as a model system.
Degree: Biological Sciences, 2017, University of California – Irvine
URL: http://www.escholarship.org/uc/item/1ms6w80b
► Microbes are key players in global biogeochemical cycles. Despite their importance, many ecosystem models do not explicitly consider microbial communities and their functions. One reason…
(more)
▼ Microbes are key players in global biogeochemical cycles. Despite their importance, many ecosystem models do not explicitly consider microbial communities and their functions. One reason for this is that we lack a quantitative understanding of the role that microbes play in biogeochemical processes, making their incorporation into models difficult. My dissertation takes a step towards establishing these links between microbial community composition and ecosystem function using two different approaches. The first approach was characterizing the patterns and drivers of a handful of traits associated with a key biogeochemical process, the nitrogen (N) cycle and then asking which taxa were associated with this trait. I tested this approach in one ecosystem and provided a blueprint of the nitrogen cycling potential of a grassland litter microbial community (Chapter 1). I then extended this work to characterize the global biogeography of microbial N cycling traits and investigated what environmental drivers might underlie these patterns (Chapter 2). Moving beyond patterns, understanding the processes driving the distribution of microbial communities presents a further challenge. Thus, the second approach taken in my dissertation was an experimental approach to investigate the local processes driving variation in bacterial community composition and functioning. More specifically, I focused on disentangling the effects of selection, drift, and dispersal on community assembly. First, I investigated how dispersal influences the assembly of this natural bacterial community using time series data from a field experiment (Chapter 3). I found that changing dispersal rate altered bacterial colonization rates and led to differences in the abundance, richness, evenness, and composition of communities. I then used another field experiment to quantify the role of stochastic processes in shaping microbial communities (Chapter 4). Here, I identified stochastic variation in bacterial community composition even after accounting for measurement error. Furthermore, stochastic variation in community composition translated into variation in functional parameters. Ultimately, the ability to accurately quantify stochastic processes is paramount to determining the predictability of community composition and functioning, whether focused on bacteria that degrade plant litter, microbes in the human gut, or patterns of global biodiversity.
Subjects/Keywords: Ecology; Microbiology; Biology; community ecology; functioning; microbes; nitrogen cycle; traits
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APA ·
Chicago ·
MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Albright, M. B. N. (2017). Disentangling the relationship between bacterial diversity and its functioning: plant litter communities as a model system. (Thesis). University of California – Irvine. Retrieved from http://www.escholarship.org/uc/item/1ms6w80b
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Albright, Michaeline Burr Nelson. “Disentangling the relationship between bacterial diversity and its functioning: plant litter communities as a model system.” 2017. Thesis, University of California – Irvine. Accessed January 17, 2021.
http://www.escholarship.org/uc/item/1ms6w80b.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Albright, Michaeline Burr Nelson. “Disentangling the relationship between bacterial diversity and its functioning: plant litter communities as a model system.” 2017. Web. 17 Jan 2021.
Vancouver:
Albright MBN. Disentangling the relationship between bacterial diversity and its functioning: plant litter communities as a model system. [Internet] [Thesis]. University of California – Irvine; 2017. [cited 2021 Jan 17].
Available from: http://www.escholarship.org/uc/item/1ms6w80b.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Albright MBN. Disentangling the relationship between bacterial diversity and its functioning: plant litter communities as a model system. [Thesis]. University of California – Irvine; 2017. Available from: http://www.escholarship.org/uc/item/1ms6w80b
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of California – Berkeley
26.
Rohde, Robert Andrew.
The Development and Use of the Berkeley Fluorescence Spectrometer to Characterize Microbial Content and Detect Volcanic Ash in Glacial Ice.
Degree: Physics, 2010, University of California – Berkeley
URL: http://www.escholarship.org/uc/item/5s58z430
► The Berkeley Fluorescence Spectrometer (BFS) was designed and implemented to provide rapid non-destructive characterizations of the organic / microbial content in glacial ice. The resulting…
(more)
▼ The Berkeley Fluorescence Spectrometer (BFS) was designed and implemented to provide rapid non-destructive characterizations of the organic / microbial content in glacial ice. The resulting information is general, aiming at bulk microbial concentration and a few identifiable classes of microbes, but nonetheless can provide orders of magnitude more data than can be reasonably obtained via the slow process of cutting and sampling. This instrument has now scanned ice cores segments from a variety of Antarctic and Greenland sites including a majority of the 580 m of the WAIS Divide Core (WDC) that has been archived at the National Ice Core Laboratory (NICL). A sustained scanning rate of 4 minutes per ice core meter has been achieved with seven channel fluorescence spectra collected every 750 microns.These scans have provided the largest collection of data on the microbial content of glacial ice ever assembled. They show the microbial content of the ice to be fairly homogenous in bulk but heterogeneous at the fine scale. We further discovered that the observed fluorescence declines ~95% during the top ~100m of all ice cores for which scans have been conducted. This decline corresponds to the transition from snow to fully dense ice and the signal response may reflect a combination of changes in the microbial population of the ice mixed with changes in the optical properties of the ice itself. Thus far microbial deposits have not shown the kind of the large-scale continuity that would be required to coordinate events over large scales or make them useful for dating. However, the BFS has revealed an unexpected sensitivity to volcanic ash that makes it a very sensitive non-destructive system for detecting faint ash layers in archived ice cores.
Subjects/Keywords: Physics, General; Biology, Microbiology; Fluorescence; Ice cores; Microbes; Volcanic ash
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Rohde, R. A. (2010). The Development and Use of the Berkeley Fluorescence Spectrometer to Characterize Microbial Content and Detect Volcanic Ash in Glacial Ice. (Thesis). University of California – Berkeley. Retrieved from http://www.escholarship.org/uc/item/5s58z430
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Rohde, Robert Andrew. “The Development and Use of the Berkeley Fluorescence Spectrometer to Characterize Microbial Content and Detect Volcanic Ash in Glacial Ice.” 2010. Thesis, University of California – Berkeley. Accessed January 17, 2021.
http://www.escholarship.org/uc/item/5s58z430.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Rohde, Robert Andrew. “The Development and Use of the Berkeley Fluorescence Spectrometer to Characterize Microbial Content and Detect Volcanic Ash in Glacial Ice.” 2010. Web. 17 Jan 2021.
Vancouver:
Rohde RA. The Development and Use of the Berkeley Fluorescence Spectrometer to Characterize Microbial Content and Detect Volcanic Ash in Glacial Ice. [Internet] [Thesis]. University of California – Berkeley; 2010. [cited 2021 Jan 17].
Available from: http://www.escholarship.org/uc/item/5s58z430.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Rohde RA. The Development and Use of the Berkeley Fluorescence Spectrometer to Characterize Microbial Content and Detect Volcanic Ash in Glacial Ice. [Thesis]. University of California – Berkeley; 2010. Available from: http://www.escholarship.org/uc/item/5s58z430
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of California – Merced
27.
Sunagawa, Shinichi.
Microbial diversity and transcriptome profiling in coral holobionts.
Degree: Quantiative and Systems Biology, 2010, University of California – Merced
URL: http://www.escholarship.org/uc/item/7hz1s0hh
► Coral reefs are often considered as the proverbial canary in the mine for the oceans. Their current decline alarmingly correlates with indirect and direct anthropogenic…
(more)
▼ Coral reefs are often considered as the proverbial canary in the mine for
the oceans. Their current decline alarmingly correlates with indirect and direct
anthropogenic stress resulting in increased frequencies and geographic spread of
mass mortality, i.e., coral bleaching, and disease events. Thus, a rapid advancement
in the understanding of the factors determining coral health and disease is
of great importance. The post-genomic era has propelled both the development of
high-throughput technologies and a shift in biological research from reductionist
to system-level approaches. By viewing an organism as an integrated and interacting
network of genes, proteins, and biochemical reactions, the nascent field of
systems biology seeks to understand biological processes at a holistic level.
In this dissertation, corals are considered as superorganisms, or holobionts,
i.e., biological entities composed of a host organism and all of its associated
microorganisms. The microbial component has been shown to play key
roles in the functioning of the coral holobiont, but much remains to be studied
about its 1) diversity, 2) response to stress, and 3) influence on the physiology,
ecology, and evolution of the host. To address these gaps, I have applied a combinatorial
approach of 454-sequencing, microbial community profiling (Phylochip),
algal and host genotyping, as well as cDNA microarrays. The results include the
most comprehensive census of coral-associated bacteria so far and illustrate that
corals provide specialized habitats for an extremely diverse consortium of bacteria,
including taxa that are often unknown, as well as rarely or not detected in the
seawater. In diseased corals, bacterial communities profiles shifted and displayed
a higher abundance of bacteria that are commonly found in other diseased marine
invertebrates. Finally, correlating algal genotype and coral host transcriptomic
data revealed a substantial interaction between microbial symbionts and host gene
expression.
These results represent initial efforts towards capturing the parts lists, i.e.,
the microbial diversity in coral holobionts, and integrating them with host transcriptomic
data. The relevance of the results are discussed in the context of an
envisioned coral (eco)systems biology approach to advance our understanding of
coral health and disease.
Subjects/Keywords: Marine Biology and Biological Oceanography; coral; holobionts; microbes
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Sunagawa, S. (2010). Microbial diversity and transcriptome profiling in coral holobionts. (Thesis). University of California – Merced. Retrieved from http://www.escholarship.org/uc/item/7hz1s0hh
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Sunagawa, Shinichi. “Microbial diversity and transcriptome profiling in coral holobionts.” 2010. Thesis, University of California – Merced. Accessed January 17, 2021.
http://www.escholarship.org/uc/item/7hz1s0hh.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Sunagawa, Shinichi. “Microbial diversity and transcriptome profiling in coral holobionts.” 2010. Web. 17 Jan 2021.
Vancouver:
Sunagawa S. Microbial diversity and transcriptome profiling in coral holobionts. [Internet] [Thesis]. University of California – Merced; 2010. [cited 2021 Jan 17].
Available from: http://www.escholarship.org/uc/item/7hz1s0hh.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Sunagawa S. Microbial diversity and transcriptome profiling in coral holobionts. [Thesis]. University of California – Merced; 2010. Available from: http://www.escholarship.org/uc/item/7hz1s0hh
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Mississippi State University
28.
Fratesi, Sarah E.
Distribution and Morphology of Bacteria and their Byproducts in Microbial Enhanced Oil Recovery Operations.
Degree: MS, Geosciences, 2002, Mississippi State University
URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-07082002-143627/
;
► This study uses scanning electron microscopy (SEM) to examine the occurrence of bacteria and their exopolysaccharide slime layer in microbial enhanced oil recovery experiments. A…
(more)
▼ This study uses scanning electron microscopy (SEM) to examine the occurrence of bacteria and their exopolysaccharide slime layer in microbial enhanced oil recovery experiments. A test of SEM preservation techniques showed that air drying and 10% glutaraldehyde fixation preserved the slime layer but distorted and flattened bacteria. Techniques with ethanol dehydration preserved the bacterial textures but fragmented the slime layer. In sandstones that had been plugged during microbial enhanced oil recovery experiments, bacteria are sparsely distributed. An irregular, confluent slime sheet covers grains and coats pore spaces and is responsible for permeability modification in microbial enhanced oil recovery. The development of the slime layer over time involves several steps: growth of ultramicrobacteria into full-sized bacteria; creation of a slime capsule; growth of globular masses, ropy masses, webs, thin sheets; and growth of a thicker, pore-filling mass of slime associated with large balls of slime.
Advisors/Committee Members: Dr. F. Leo Lynch (chair), Dr. John E. Mylroie (committee member), Dr. Lewis R. Brown (committee member), Dr. Brenda L. Kirkland (committee member).
Subjects/Keywords: biofilm; microbes; SEM; MEOR
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Fratesi, S. E. (2002). Distribution and Morphology of Bacteria and their Byproducts in Microbial Enhanced Oil Recovery Operations. (Masters Thesis). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-07082002-143627/ ;
Chicago Manual of Style (16th Edition):
Fratesi, Sarah E. “Distribution and Morphology of Bacteria and their Byproducts in Microbial Enhanced Oil Recovery Operations.” 2002. Masters Thesis, Mississippi State University. Accessed January 17, 2021.
http://sun.library.msstate.edu/ETD-db/theses/available/etd-07082002-143627/ ;.
MLA Handbook (7th Edition):
Fratesi, Sarah E. “Distribution and Morphology of Bacteria and their Byproducts in Microbial Enhanced Oil Recovery Operations.” 2002. Web. 17 Jan 2021.
Vancouver:
Fratesi SE. Distribution and Morphology of Bacteria and their Byproducts in Microbial Enhanced Oil Recovery Operations. [Internet] [Masters thesis]. Mississippi State University; 2002. [cited 2021 Jan 17].
Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-07082002-143627/ ;.
Council of Science Editors:
Fratesi SE. Distribution and Morphology of Bacteria and their Byproducts in Microbial Enhanced Oil Recovery Operations. [Masters Thesis]. Mississippi State University; 2002. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-07082002-143627/ ;

University of Minnesota
29.
Carpenter, Abigail Joy.
Nutrient digestion and nitrogen metabolism of dried
fermentation biomass and various fractions of rumen
microbes.
Degree: MS, Animal sciences, 2012, University of Minnesota
URL: http://purl.umn.edu/140005
► University of Minnesota M.S. thesis. August 2012. Major: Animal sciences. Advisor: Marshall D. Stern. 1 computer file (PDF); v, 87 pages.
An experiment was performed…
(more)
▼ University of Minnesota M.S. thesis. August 2012.
Major: Animal sciences. Advisor: Marshall D. Stern. 1 computer file
(PDF); v, 87 pages.
An experiment was performed to investigate if
fermentation biomass (FB), a dried bacterial co-product derived
from lysine production (Ajinomoto Heartland, Inc.) can be used as a
protein source in ruminant diets. Eight dual-flow continuous
culture fermenters were inoculated with rumen fluid and used during
one experimental period consisting of a 7-d adaptation period
followed by 3 sampling days. Substrate for the microbes was
provided by one of two isonitrogenous diets, CON or DFB. In CON,
soybean meal (SBM) provided 57% of total CP, and in DFB, SBM and FB
provided 12 and 45% of total CP, respectively. CON contained 3%
molasses, 16% ground corn, 13% grass hay, 48% corn silage, and 20%
SBM on a DM basis. DFB contained 3% molasses, 18.4% ground corn,
13% grass hay, 50% corn silage, 8.5% SBM, and 6.7% FB. Fermenters
were supplied with 75 g/d of DM divided into 8 equal portions.
Anaerobic conditions were maintained by infusion of N2; pH was
maintained between 5.8 and 6.8; and temperature was set at
39C. On sampling days, liquid and solid effluent were
collected, combined, and homogenized to be used for chemical
analysis and in vitro estimation of intestinal digestibility (ID).
Treatment did not affect (P > 0.1) average, maximum, or minimum
fermenter pH. There was no effect (P > 0.1) on apparent or true
OM, NDF, or ADF digestibility (%) or total VFA (mM), although
branched-chain VFA (mM) was higher (P = 0.01) in CON because
isobutyrate (mol/100 mol) tended (P = 0.06) to increase with CON
treatment. Source of N had no effect (P > 0.1) on total,
dietary, or bacterial-N flows. Addition of FB decreased (P <
0.05) NH3-N flow from 0.4 to 0.2 g/d and tended to decrease (P
=0.06) effluent NH3-N concentration from 17.1 to 9.7 mg/100 mL. His
and Met flows increased (P < 0.05) from 0.48 to 0.53 and 0.18 to
0.20 g/d, respectively, when FB partially replaced SBM in the diet,
but there were no effects (P > 0.1) on other AA or total AA
flows. There was a trend (P = 0.08) in percent non-essential AA
input (CON = 73.6% vs. DFB = 82.2%) in effluent; however, there was
no effect (P > 0.1) on percent of essential AA or total AA input
in effluent. Effluent from the DFB treatment was higher (P <
0.05) in ID than CON (CON = 70.4% vs. DFB = 79.6%). These results
indicate that FB elicited a similar response in N metabolism and AA
flows to SBM but had a higher estimated digestibility in the
intestine, and has potential use as a protein source in ruminant
diets. In a second experiment, rumen fluid was collected from 4
steers fed the same diet, and 3 populations of rumen microorganisms
(liquid-associated bacteria (LAB), solid-associated bacteria (SAB),
and liquid-associated protozoa (LAP)) were isolated by differential
centrifugation. Intestinal digestibility of N (ID) was determined
using the in vitro (pepsin and pancreatin) steps of the 3-step
procedure of Calsamiglia and Stern (1995). Total-N content…
Advisors/Committee Members: Marshall D. Stern.
Subjects/Keywords: Continuous culture; Fermentation biomass; Intestinal digestibility; Protein; Rumen microbes; Ruminant
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Carpenter, A. J. (2012). Nutrient digestion and nitrogen metabolism of dried
fermentation biomass and various fractions of rumen
microbes. (Masters Thesis). University of Minnesota. Retrieved from http://purl.umn.edu/140005
Chicago Manual of Style (16th Edition):
Carpenter, Abigail Joy. “Nutrient digestion and nitrogen metabolism of dried
fermentation biomass and various fractions of rumen
microbes.” 2012. Masters Thesis, University of Minnesota. Accessed January 17, 2021.
http://purl.umn.edu/140005.
MLA Handbook (7th Edition):
Carpenter, Abigail Joy. “Nutrient digestion and nitrogen metabolism of dried
fermentation biomass and various fractions of rumen
microbes.” 2012. Web. 17 Jan 2021.
Vancouver:
Carpenter AJ. Nutrient digestion and nitrogen metabolism of dried
fermentation biomass and various fractions of rumen
microbes. [Internet] [Masters thesis]. University of Minnesota; 2012. [cited 2021 Jan 17].
Available from: http://purl.umn.edu/140005.
Council of Science Editors:
Carpenter AJ. Nutrient digestion and nitrogen metabolism of dried
fermentation biomass and various fractions of rumen
microbes. [Masters Thesis]. University of Minnesota; 2012. Available from: http://purl.umn.edu/140005
30.
Pandiyan, P.
Micropropagation of Bacopa Monnieri (L.) Pennell. and
application of some efficient microbes; -.
Degree: Botany, 2011, Bharathidasan University
URL: http://shodhganga.inflibnet.ac.in/handle/10603/4797
None
Summary p.112-115
Advisors/Committee Members: Selvaraj, T.
Subjects/Keywords: Tissue culture; Bacopa Monnieri; microbes
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Pandiyan, P. (2011). Micropropagation of Bacopa Monnieri (L.) Pennell. and
application of some efficient microbes; -. (Thesis). Bharathidasan University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/4797
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Pandiyan, P. “Micropropagation of Bacopa Monnieri (L.) Pennell. and
application of some efficient microbes; -.” 2011. Thesis, Bharathidasan University. Accessed January 17, 2021.
http://shodhganga.inflibnet.ac.in/handle/10603/4797.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Pandiyan, P. “Micropropagation of Bacopa Monnieri (L.) Pennell. and
application of some efficient microbes; -.” 2011. Web. 17 Jan 2021.
Vancouver:
Pandiyan P. Micropropagation of Bacopa Monnieri (L.) Pennell. and
application of some efficient microbes; -. [Internet] [Thesis]. Bharathidasan University; 2011. [cited 2021 Jan 17].
Available from: http://shodhganga.inflibnet.ac.in/handle/10603/4797.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Pandiyan P. Micropropagation of Bacopa Monnieri (L.) Pennell. and
application of some efficient microbes; -. [Thesis]. Bharathidasan University; 2011. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/4797
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
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