Aluminum prevents stomatal conductance from responding to vapor pressure deficit in Citrus limonia
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.envexpbot.2018.08.017 http://hdl.handle.net/11449/180117 |
Resumo: | Stomatal aperture generally increases in response to low vapor pressure deficit (VPD) and decreases at high VPD. Aluminum (Al) inhibits root growth, indirectly exposing the roots to low water availability, which may decrease leaf hydration and, consequently, the stomatal conductance (gs). In this study, Citrus limonia (‘Rangpur’ lime) was grown in nutrient solution with 1480 μM Al for 90 days, and we expected that the presence of Al could prevent gs from responding to VPD. As expected, gs did not respond to the increase in VPD in plants exposed to Al. Aluminum also reduced the relative water content and midday leaf water potential (Ψmd) after 60 and 90 days. The CO2 assimilation rate (A) followed the same response pattern exhibited by gs, the estimation of the carboxylation efficiency was not reduced in plants exposed to Al and measured under drier air, while photochemical responses were slightly reduced in plants exposed to Al, indicating that the Al-induced decrease in A was dependent on gs and less ascribed to low photochemical performance. Like in drought conditions, the long-term exposure to Al reduces leaf hydration and compromises gs responses to the atmosphere, eventually impairing A in ‘Rangpur’ lime plants. |
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Aluminum prevents stomatal conductance from responding to vapor pressure deficit in Citrus limoniaIndirect Al effectLeaf gas exchangeLeaf hydration‘Rangpur’ limeStomatal aperture generally increases in response to low vapor pressure deficit (VPD) and decreases at high VPD. Aluminum (Al) inhibits root growth, indirectly exposing the roots to low water availability, which may decrease leaf hydration and, consequently, the stomatal conductance (gs). In this study, Citrus limonia (‘Rangpur’ lime) was grown in nutrient solution with 1480 μM Al for 90 days, and we expected that the presence of Al could prevent gs from responding to VPD. As expected, gs did not respond to the increase in VPD in plants exposed to Al. Aluminum also reduced the relative water content and midday leaf water potential (Ψmd) after 60 and 90 days. The CO2 assimilation rate (A) followed the same response pattern exhibited by gs, the estimation of the carboxylation efficiency was not reduced in plants exposed to Al and measured under drier air, while photochemical responses were slightly reduced in plants exposed to Al, indicating that the Al-induced decrease in A was dependent on gs and less ascribed to low photochemical performance. Like in drought conditions, the long-term exposure to Al reduces leaf hydration and compromises gs responses to the atmosphere, eventually impairing A in ‘Rangpur’ lime plants.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Programa de Pós-Graduação em Biologia Vegetal Universidade Estadual Paulista (UNESP) Instituto de Biociências Departamento de Botânica, Av. 24-A, 1515Universidade Estadual Paulista (UNESP) Instituto de Biociências Departamento de Botânica, Av. 24-A, 1515Programa de Pós-Graduação em Biologia Vegetal Universidade Estadual Paulista (UNESP) Instituto de Biociências Departamento de Botânica, Av. 24-A, 1515Universidade Estadual Paulista (UNESP) Instituto de Biociências Departamento de Botânica, Av. 24-A, 1515CNPq: 309149/2017-7Universidade Estadual Paulista (Unesp)Silva, Giselle Schwab [UNESP]Gavassi, Marina Alves [UNESP]Nogueira, Matheus Armelin [UNESP]Habermann, Gustavo [UNESP]2018-12-11T17:38:14Z2018-12-11T17:38:14Z2018-11-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article662-671application/pdfhttp://dx.doi.org/10.1016/j.envexpbot.2018.08.017Environmental and Experimental Botany, v. 155, p. 662-671.0098-8472http://hdl.handle.net/11449/18011710.1016/j.envexpbot.2018.08.0172-s2.0-850519732232-s2.0-85051973223.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengEnvironmental and Experimental Botany1,376info:eu-repo/semantics/openAccess2023-11-20T06:15:24Zoai:repositorio.unesp.br:11449/180117Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:15:51.979095Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Aluminum prevents stomatal conductance from responding to vapor pressure deficit in Citrus limonia |
title |
Aluminum prevents stomatal conductance from responding to vapor pressure deficit in Citrus limonia |
spellingShingle |
Aluminum prevents stomatal conductance from responding to vapor pressure deficit in Citrus limonia Silva, Giselle Schwab [UNESP] Indirect Al effect Leaf gas exchange Leaf hydration ‘Rangpur’ lime |
title_short |
Aluminum prevents stomatal conductance from responding to vapor pressure deficit in Citrus limonia |
title_full |
Aluminum prevents stomatal conductance from responding to vapor pressure deficit in Citrus limonia |
title_fullStr |
Aluminum prevents stomatal conductance from responding to vapor pressure deficit in Citrus limonia |
title_full_unstemmed |
Aluminum prevents stomatal conductance from responding to vapor pressure deficit in Citrus limonia |
title_sort |
Aluminum prevents stomatal conductance from responding to vapor pressure deficit in Citrus limonia |
author |
Silva, Giselle Schwab [UNESP] |
author_facet |
Silva, Giselle Schwab [UNESP] Gavassi, Marina Alves [UNESP] Nogueira, Matheus Armelin [UNESP] Habermann, Gustavo [UNESP] |
author_role |
author |
author2 |
Gavassi, Marina Alves [UNESP] Nogueira, Matheus Armelin [UNESP] Habermann, Gustavo [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Silva, Giselle Schwab [UNESP] Gavassi, Marina Alves [UNESP] Nogueira, Matheus Armelin [UNESP] Habermann, Gustavo [UNESP] |
dc.subject.por.fl_str_mv |
Indirect Al effect Leaf gas exchange Leaf hydration ‘Rangpur’ lime |
topic |
Indirect Al effect Leaf gas exchange Leaf hydration ‘Rangpur’ lime |
description |
Stomatal aperture generally increases in response to low vapor pressure deficit (VPD) and decreases at high VPD. Aluminum (Al) inhibits root growth, indirectly exposing the roots to low water availability, which may decrease leaf hydration and, consequently, the stomatal conductance (gs). In this study, Citrus limonia (‘Rangpur’ lime) was grown in nutrient solution with 1480 μM Al for 90 days, and we expected that the presence of Al could prevent gs from responding to VPD. As expected, gs did not respond to the increase in VPD in plants exposed to Al. Aluminum also reduced the relative water content and midday leaf water potential (Ψmd) after 60 and 90 days. The CO2 assimilation rate (A) followed the same response pattern exhibited by gs, the estimation of the carboxylation efficiency was not reduced in plants exposed to Al and measured under drier air, while photochemical responses were slightly reduced in plants exposed to Al, indicating that the Al-induced decrease in A was dependent on gs and less ascribed to low photochemical performance. Like in drought conditions, the long-term exposure to Al reduces leaf hydration and compromises gs responses to the atmosphere, eventually impairing A in ‘Rangpur’ lime plants. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-12-11T17:38:14Z 2018-12-11T17:38:14Z 2018-11-01 |
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/10.1016/j.envexpbot.2018.08.017 Environmental and Experimental Botany, v. 155, p. 662-671. 0098-8472 http://hdl.handle.net/11449/180117 10.1016/j.envexpbot.2018.08.017 2-s2.0-85051973223 2-s2.0-85051973223.pdf |
url |
http://dx.doi.org/10.1016/j.envexpbot.2018.08.017 http://hdl.handle.net/11449/180117 |
identifier_str_mv |
Environmental and Experimental Botany, v. 155, p. 662-671. 0098-8472 10.1016/j.envexpbot.2018.08.017 2-s2.0-85051973223 2-s2.0-85051973223.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Environmental and Experimental Botany 1,376 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
662-671 application/pdf |
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 |
|
_version_ |
1808128913348493312 |