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You searched for subject:(Tomato 60). Showing records 1 – 3 of 3 total matches.

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The Ohio State University

1. Wu, Shan. <i>SUN</i> REGULATES FRUIT SHAPE AND VEGETATIVE GROWTH IN TOMATO.

Degree: MS, Horticulture and Crop Science, 2009, The Ohio State University

The <i>SUN</i> gene, located on tomato (<i>Solanum lycopersicum</i>) chromosome 7, controls elongated fruit shape. Cell measurement on 7-day-post-anthesis fruits of Near Isogenic lines (NILs) that differ at <i>sun</i> locus in LA1589 background shows that <i>SUN</i> promotes the elongated shape through redistributing the mass. To further study the role of <i>SUN</i> in regulating fruit shape, we investigated the localization of <i>SUN</i> in young developing ovaries and fruits of <i>sun</i> NILs by <i>in situ</i> hybridization. Consistent with the result of previous expression analysis, <i>SUN</i> transcript is present in the elongated ovaries and fruits but not in the round ones. The extremely elongated fruit shape and lack of seeds when <i>SUN</i> is overexpressed resemble the parthenocarpic fruits caused by auxin overproduction. To better understand its role in regulating plant growth, we studied the effects of <i>SUN</i> on vegetative plant parts using <i>sun</i> NILs and <i>SUN</i> overexpressing lines in both wild tomato <i>S. pimpinellifolium</i> accession LA1589 and cultivated tomato Sun1642. Our results show that, in addition to fruit shape, <i>SUN</i> also underlies morphological variations of cotyledons, leaves and vascular structure as well as non-fixed directional twisting of stem and leaf rachis. Moreover, overexpression of <i>SUN</i> leads to a magnified effect of this gene on plant morphology. <i>SUN</i> overexpressors also display reduced rhizogenesis in response to exogenous auxin. The observed phenotypes suggest that <i>SUN</i> may play roles in auxin response and/or transport. However, the expression analysis of several auxin-related genes using Northern blot did not show a clear difference in the temporal expression patterns between the NILs. <i>In situ</i> hybridization of two auxin response factor genes, <i>ARF6</i> and <i>ARF8</i> and a gene encoding PIN3-like auxin transport protein indicates that they are co-expressed with <i>SUN</i> in the seed and vascular tissue, but there is no distinct difference between the elongated and the round fruit, which suggests that <i>SUN</i> does not regulate the expression of these genes. This suggestion is supported by the subcellular localization study on SUN which shows that SUN is not localized in the cell nucleus. Advisors/Committee Members: van der Knaap, Esther (Advisor).

Subjects/Keywords: Tomato (<; i>; Solanum lycopersicum<; /i>; ); <; i>; SUN<; /i>;

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APA (6th Edition):

Wu, S. (2009). <i>SUN</i> REGULATES FRUIT SHAPE AND VEGETATIVE GROWTH IN TOMATO. (Masters Thesis). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1250473979

Chicago Manual of Style (16th Edition):

Wu, Shan. “<i>SUN</i> REGULATES FRUIT SHAPE AND VEGETATIVE GROWTH IN TOMATO.” 2009. Masters Thesis, The Ohio State University. Accessed September 15, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1250473979.

MLA Handbook (7th Edition):

Wu, Shan. “<i>SUN</i> REGULATES FRUIT SHAPE AND VEGETATIVE GROWTH IN TOMATO.” 2009. Web. 15 Sep 2019.

Vancouver:

Wu S. <i>SUN</i> REGULATES FRUIT SHAPE AND VEGETATIVE GROWTH IN TOMATO. [Internet] [Masters thesis]. The Ohio State University; 2009. [cited 2019 Sep 15]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1250473979.

Council of Science Editors:

Wu S. <i>SUN</i> REGULATES FRUIT SHAPE AND VEGETATIVE GROWTH IN TOMATO. [Masters Thesis]. The Ohio State University; 2009. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1250473979

2. Wiendl, Toni Andreas. Efeitos de baixas doses de radiação do Co-60 (Radio-hormesis) em sementes de tomate.

Degree: PhD, Tecnologia Nuclear - Aplicações, 2010, University of São Paulo

Sementes de tomate do híbrido Gladiador foram expostas a radiações gama do Co-60 nas doses 0; 2,5; 5; 7,5; 10; 12,5; 15 e 20 Gy. Foram analisados vários parâmetros como germinação, altura da plântula até o cotilédone, altura total da plântula, peso fresco e seco da plântula, altura da planta, diâmetro do caule da planta, peso fresco e seco e área da 5º folha, número de frutos verdes com diâmetro maior que 3 cm, número de frutos esverdeados, de vez e maduros, número total de frutos, Brix e pH dos frutos, peso médio dos frutos e produção total de frutos. Diferentes efeitos estimulantes foram observados nos diversos estádios de desenvolvimento das plantas. O maior estímulo, para produção ocorreu para a dose de 10 Gy. As maiores alturas médias da plântula e da planta ocorreram para a dose de 7,5 Gy. O maior número de frutos verdes com 3 cm de diâmetro ocorreu para o tratamento de 12,5 e 15 Gy. A irradiação também estimulou a produção de maior número total de frutos, em todas as doses aplicadas, com vantagem para a dose de 10 Gy que produziu 88% mais frutos que a testemunha e também uma produção em peso 86% maior. O pH dos frutos acidificou significativamente a partir da dose de 12,5 Gy. Houve aumento na produção em todos os tratamentos em relação à testemunha sendo que o maior estímulo para produção ocorreu para as doses de 10, 12,5 e 15 Gy. O uso de baixas doses de radiação gama do Co- 60 aplicado no tratamento pré-semeadura, nas sementes, mostrou-se eficiente em estimular o desenvolvimento das plantas e aumentar a produção do tomate.

Tomato seeds of the Gladiador hybrid were exposed to gamma radiation of Co-60 with the following doses: 0; 2,5; 5; 7,5; 10; 12,5; 15 e 20 Gy. Analysis were performed on germination, seedlings height to cotyledon, seedling total height, seedling fresh and dry weight, plant height, stalk diameter at the root beginning, fresh and dry weight of the 5th leaf, number of green fruits with diameter higher than 3 cm, number of green, half ripen and ripen fruits, total number of fruits, Brix and pH of fruits, average fruit weight and fruit total production. A variety of stimulation effects were observed on the different plant developing stages. The greatest stimulus for production was observed in the 10 Gy dose. The highest seedling average height and plant average height were observed for the 7,5 Gy dose. The biggest number of green fruits with diameter higher than 3 cm occurred for the 12,5 and 15 Gy treatments. Irradiation also stimulated a higher total number of fruits in all doses, having advantage the 10 Gy dose which produced 88% more fruits than control as well as 86% more weight production. The fruits pH acidified significantly in a dose of 12,5 Gy and higher. Production increased in all treatments comparing to control and the highest stimulus for production observed was for the 10, 12,5 and 15 Gy. The use of low gamma radiation doses of Co-60 applied as pre-sowing treatment in the seeds, efficiently stimulated the development of plants and the tomato production.

Advisors/Committee Members: Arthur, Valter.

Subjects/Keywords: Co-60; Co-60; gamma radiation; hormesis; hormesis; radiação gama; seeds; sementes; tomate; tomato

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APA (6th Edition):

Wiendl, T. A. (2010). Efeitos de baixas doses de radiação do Co-60 (Radio-hormesis) em sementes de tomate. (Doctoral Dissertation). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/85/85131/tde-21062011-090843/ ;

Chicago Manual of Style (16th Edition):

Wiendl, Toni Andreas. “Efeitos de baixas doses de radiação do Co-60 (Radio-hormesis) em sementes de tomate.” 2010. Doctoral Dissertation, University of São Paulo. Accessed September 15, 2019. http://www.teses.usp.br/teses/disponiveis/85/85131/tde-21062011-090843/ ;.

MLA Handbook (7th Edition):

Wiendl, Toni Andreas. “Efeitos de baixas doses de radiação do Co-60 (Radio-hormesis) em sementes de tomate.” 2010. Web. 15 Sep 2019.

Vancouver:

Wiendl TA. Efeitos de baixas doses de radiação do Co-60 (Radio-hormesis) em sementes de tomate. [Internet] [Doctoral dissertation]. University of São Paulo; 2010. [cited 2019 Sep 15]. Available from: http://www.teses.usp.br/teses/disponiveis/85/85131/tde-21062011-090843/ ;.

Council of Science Editors:

Wiendl TA. Efeitos de baixas doses de radiação do Co-60 (Radio-hormesis) em sementes de tomate. [Doctoral Dissertation]. University of São Paulo; 2010. Available from: http://www.teses.usp.br/teses/disponiveis/85/85131/tde-21062011-090843/ ;

3. Xu, Xiulan. Seed Transmission of &#60;i>Clavibacter michiganensis&#60;/i> subsp. &#60;i>michiganensis&#60;/i> and Development of Strategies to Control the Pathogen in Seed.

Degree: PhD, Agricultural, Environmental and Developmental Economics, 2010, The Ohio State University

<i>Clavibacter michiganensis</i> subsp. <i>michiganensis </i> (<i>Cmm </i>) is a Gram-positive bacterium that causes wilting and cankers, leading to severe economic losses in commercial tomato production worldwide. The initial means of bacterial canker entry into a crop is through <i>Cmm</i>-infected seeds or transplants. In order to study the biology of <i>Cmm</i> seed transmission and seedling infection, bioluminescent <i>Cmm</i> strains were constructed by transformation of the reporter gene, <i>lux</i>-operon, into <i>Cmm</i>. A promoterless <i>lux</i>-operon, originally derived from <i>Photorhabdus luminescens</i>, was linked downstream of a chloramphenicol exporter in a <i>Cmm</i> transposon mutagenesis vector, pKGT452Cß. Electroporation of the constructed vector pXX2 carrying the <i>Cmxr::luxABCDE::Tn1409</i> cassette resulted in insertion of <i>lux</i>-operon into the <i>Cmm</i> chromosome. Among 19 bioluminescent <i>Cmm</i> mutants obtained, the virulent, stable, constitutively bioluminescent strain BL-Cmm17 that grew similarly to its parent strain C290 was selected to study seed transmission and seedling infection. Healthy tomato seeds were inoculated with BL-Cmm17 and the dynamics of bacterial colonization on germinating seeds were monitored in real-time using an <i>in vivo</i> imaging system (IVIS). Our results showed that <i>Cmm</i> colonized the hypocotyl and the cotyledon at an early stage of germination. Visualization of seedling systemic infection by BL-Cmm17 through wound showed that <i>Cmm</i> moved towards both root than shoot under both low (45%) and high (83%) relative humidity (RH) regimes. High RH accelerated the systemic movement of <i>Cmm</i> in stem. Luminescent signals were also observed in tomato seedling roots over time. Root development was reduced in inoculated plants maintained under both humidity regimes. The strong positive correlation between light intensity and bacterial population <i>in planta</i> suggested that bioluminescent <i>Cmm</i> strains have additional potential applications such as evaluating the efficacy of bactericides and resistant cultivars. Because of the importance of seed transmission, seed must be the first point of focus in developing an integrated program to manage this disease. In this study, the effects of seed sanitation treatments combined with post-sanitation treatments of beneficial bacteria <i>Bacillus subtilis</i> and <i>Pseudomonas fluorescens</i> were evaluated. Seed sanitation treatments eliminated the pathogen in seed and reduced disease incidence in seedlings in laboratory and greenhouse grow-out tests. However, beneficial bacteria applied after seed sanitation treatments did not reduce disease incidence or influence seedling growth. Among all sanitation treatments, commercial disinfectants Kleengrow and Virkon most effectively eliminated <i>Cmm</i> from seed and reduced the pathogen populations in greenhouse seedlings. The plant essential oil thymol was phytotoxic at the concentration evaluated, increasing the rate of… Advisors/Committee Members: Miller, Sally A. (Advisor).

Subjects/Keywords: Plant Pathology; <; i>; Clavibacter michiganensis<; /i>; subsp. <; i>; michiganensis<; /i>;

…for assistance in production of the tomato seeds for my study. I would like to acknowledge… …Bioluminescence imaging of Clavibacter michiganensis subsp. michiganensis infection in tomato seeds and… …Colonization of Germinating Tomato Seeds...................................25 Introduction… …52 Chapter 3 Colonization of tomato seedlings by bioluminescent Clavibacter michiganensis… …Canker Tomato… 

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Xu, X. (2010). Seed Transmission of <i>Clavibacter michiganensis</i> subsp. <i>michiganensis</i> and Development of Strategies to Control the Pathogen in Seed. (Doctoral Dissertation). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1291083855

Chicago Manual of Style (16th Edition):

Xu, Xiulan. “Seed Transmission of <i>Clavibacter michiganensis</i> subsp. <i>michiganensis</i> and Development of Strategies to Control the Pathogen in Seed.” 2010. Doctoral Dissertation, The Ohio State University. Accessed September 15, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1291083855.

MLA Handbook (7th Edition):

Xu, Xiulan. “Seed Transmission of <i>Clavibacter michiganensis</i> subsp. <i>michiganensis</i> and Development of Strategies to Control the Pathogen in Seed.” 2010. Web. 15 Sep 2019.

Vancouver:

Xu X. Seed Transmission of <i>Clavibacter michiganensis</i> subsp. <i>michiganensis</i> and Development of Strategies to Control the Pathogen in Seed. [Internet] [Doctoral dissertation]. The Ohio State University; 2010. [cited 2019 Sep 15]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1291083855.

Council of Science Editors:

Xu X. Seed Transmission of <i>Clavibacter michiganensis</i> subsp. <i>michiganensis</i> and Development of Strategies to Control the Pathogen in Seed. [Doctoral Dissertation]. The Ohio State University; 2010. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1291083855

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