Photomorphogenic modulation of water stress in tomato (Solanum lycopersicum L.): The role of phytochromes A, B1, and B2
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1080/14620316.2015.11513149 http://hdl.handle.net/11449/220418 |
Resumo: | Phytochromes are red/far-red light photoreceptors that mediate a variety of photomorphogenic processes in plants, from germination to flowering. In addition, there is evidence that phytochromes are also part of the stress signalling response, especially in response to water deficit stress, which is the major abiotic factor limiting plant growth and crop productivity worldwide. In this study, we used the phyA (far red-insensitive; fri), phyB1 (temporary red-insensitive; tri) and phyB2 mutants of tomato (Solanum lycopersicum L.) to study the roles of these three phytochromes in drought stress responses. Compared to wild type (WT) plants grown under water-deficit stress conditions, the fri, tri, and phyB2 mutants did not exhibit altered dry weights, leaf areas, stomatal densities, or stomatal opening. The stomatal conductance of all three mutants was severely reduced under both fully-hydrated and water-deficit conditions. Although relative water contents did change after drought stress in each mutant, the most significant reduction in water potential during water stress was observed in the fri mutant. However, this mutant returned its water status to WT levels during rehydration. Although the phyB2 mutant lost more water from detached leaves during abscisic acid (ABA) treatment, phyB2 behaved like WT plants, indicating that this mutant was not insensitive to ABA. Overall, these results indicate that the phytochromes phyA, phyB1, and phyB2 modulate drought stress responses in tomato. |
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Photomorphogenic modulation of water stress in tomato (Solanum lycopersicum L.): The role of phytochromes A, B1, and B2Phytochromes are red/far-red light photoreceptors that mediate a variety of photomorphogenic processes in plants, from germination to flowering. In addition, there is evidence that phytochromes are also part of the stress signalling response, especially in response to water deficit stress, which is the major abiotic factor limiting plant growth and crop productivity worldwide. In this study, we used the phyA (far red-insensitive; fri), phyB1 (temporary red-insensitive; tri) and phyB2 mutants of tomato (Solanum lycopersicum L.) to study the roles of these three phytochromes in drought stress responses. Compared to wild type (WT) plants grown under water-deficit stress conditions, the fri, tri, and phyB2 mutants did not exhibit altered dry weights, leaf areas, stomatal densities, or stomatal opening. The stomatal conductance of all three mutants was severely reduced under both fully-hydrated and water-deficit conditions. Although relative water contents did change after drought stress in each mutant, the most significant reduction in water potential during water stress was observed in the fri mutant. However, this mutant returned its water status to WT levels during rehydration. Although the phyB2 mutant lost more water from detached leaves during abscisic acid (ABA) treatment, phyB2 behaved like WT plants, indicating that this mutant was not insensitive to ABA. Overall, these results indicate that the phytochromes phyA, phyB1, and phyB2 modulate drought stress responses in tomato.Departamento de Biologia Aplicada à Agropecuária Universidade Estadual Paulista “Júlio de Mesquita Filho”, Via de Acesso Prof. Paulo Donato Castellane s/nDepartamento de Biologia Geral Universidade Federal de Goiás, Km 13Departamento de Biologia Aplicada à Agropecuária Universidade Estadual Paulista “Júlio de Mesquita Filho”, Via de Acesso Prof. Paulo Donato Castellane s/nUniversidade Estadual Paulista (UNESP)Universidade Federal de Goiás (UFG)D’amico-Damião, V. [UNESP]Cruz, F. J.R. [UNESP]Gavassi, M. A. [UNESP]Santos, D. M.M. [UNESP]Melo, H. C.Carvalho, R. F. [UNESP]2022-04-28T19:01:26Z2022-04-28T19:01:26Z2015-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article25-30http://dx.doi.org/10.1080/14620316.2015.11513149Journal of Horticultural Science and Biotechnology, v. 90, n. 1, p. 25-30, 2015.1462-0316http://hdl.handle.net/11449/22041810.1080/14620316.2015.115131492-s2.0-84938566841Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Horticultural Science and Biotechnologyinfo:eu-repo/semantics/openAccess2022-04-28T19:01:26Zoai:repositorio.unesp.br:11449/220418Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T20:29:59.429589Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Photomorphogenic modulation of water stress in tomato (Solanum lycopersicum L.): The role of phytochromes A, B1, and B2 |
title |
Photomorphogenic modulation of water stress in tomato (Solanum lycopersicum L.): The role of phytochromes A, B1, and B2 |
spellingShingle |
Photomorphogenic modulation of water stress in tomato (Solanum lycopersicum L.): The role of phytochromes A, B1, and B2 D’amico-Damião, V. [UNESP] |
title_short |
Photomorphogenic modulation of water stress in tomato (Solanum lycopersicum L.): The role of phytochromes A, B1, and B2 |
title_full |
Photomorphogenic modulation of water stress in tomato (Solanum lycopersicum L.): The role of phytochromes A, B1, and B2 |
title_fullStr |
Photomorphogenic modulation of water stress in tomato (Solanum lycopersicum L.): The role of phytochromes A, B1, and B2 |
title_full_unstemmed |
Photomorphogenic modulation of water stress in tomato (Solanum lycopersicum L.): The role of phytochromes A, B1, and B2 |
title_sort |
Photomorphogenic modulation of water stress in tomato (Solanum lycopersicum L.): The role of phytochromes A, B1, and B2 |
author |
D’amico-Damião, V. [UNESP] |
author_facet |
D’amico-Damião, V. [UNESP] Cruz, F. J.R. [UNESP] Gavassi, M. A. [UNESP] Santos, D. M.M. [UNESP] Melo, H. C. Carvalho, R. F. [UNESP] |
author_role |
author |
author2 |
Cruz, F. J.R. [UNESP] Gavassi, M. A. [UNESP] Santos, D. M.M. [UNESP] Melo, H. C. Carvalho, R. F. [UNESP] |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) Universidade Federal de Goiás (UFG) |
dc.contributor.author.fl_str_mv |
D’amico-Damião, V. [UNESP] Cruz, F. J.R. [UNESP] Gavassi, M. A. [UNESP] Santos, D. M.M. [UNESP] Melo, H. C. Carvalho, R. F. [UNESP] |
description |
Phytochromes are red/far-red light photoreceptors that mediate a variety of photomorphogenic processes in plants, from germination to flowering. In addition, there is evidence that phytochromes are also part of the stress signalling response, especially in response to water deficit stress, which is the major abiotic factor limiting plant growth and crop productivity worldwide. In this study, we used the phyA (far red-insensitive; fri), phyB1 (temporary red-insensitive; tri) and phyB2 mutants of tomato (Solanum lycopersicum L.) to study the roles of these three phytochromes in drought stress responses. Compared to wild type (WT) plants grown under water-deficit stress conditions, the fri, tri, and phyB2 mutants did not exhibit altered dry weights, leaf areas, stomatal densities, or stomatal opening. The stomatal conductance of all three mutants was severely reduced under both fully-hydrated and water-deficit conditions. Although relative water contents did change after drought stress in each mutant, the most significant reduction in water potential during water stress was observed in the fri mutant. However, this mutant returned its water status to WT levels during rehydration. Although the phyB2 mutant lost more water from detached leaves during abscisic acid (ABA) treatment, phyB2 behaved like WT plants, indicating that this mutant was not insensitive to ABA. Overall, these results indicate that the phytochromes phyA, phyB1, and phyB2 modulate drought stress responses in tomato. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-01-01 2022-04-28T19:01:26Z 2022-04-28T19:01:26Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1080/14620316.2015.11513149 Journal of Horticultural Science and Biotechnology, v. 90, n. 1, p. 25-30, 2015. 1462-0316 http://hdl.handle.net/11449/220418 10.1080/14620316.2015.11513149 2-s2.0-84938566841 |
url |
http://dx.doi.org/10.1080/14620316.2015.11513149 http://hdl.handle.net/11449/220418 |
identifier_str_mv |
Journal of Horticultural Science and Biotechnology, v. 90, n. 1, p. 25-30, 2015. 1462-0316 10.1080/14620316.2015.11513149 2-s2.0-84938566841 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of Horticultural Science and Biotechnology |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
25-30 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1808129210333528064 |