Elevated air movement enhances stomatal sensitivity to abscisic acid in leaves developed at high relative air humidity
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.14/33523 |
Resumo: | High relative air humidity (RH ≥ 85%) during growth leads to stomata malfunctioning, resulting in water stress when plants are transferred to conditions of high evaporative demand. In this study, we hypothesized that an elevated air movement (MOV) 24 h per day, during the whole period of leaf development would increase abscisic acid concentration ([ABA]) enhancing stomatal functioning. Pot rose 'Toril' was grown at moderate (61%) or high (92%) RH combined with a continuous low (0.08 m s-1) or high (0.92 m s-1) MOV. High MOV reduced stomatal pore length and aperture in plants developed at high RH. Moreover, stomatal function improved when high MOV-treated plants were subjected to leaflet desiccation and ABA feeding. Endogenous concentration of ABA and its metabolites in the leaves was reduced by 35% in high RH, but contrary to our hypothesis this concentration was not significantly affected by high MOV. Interestingly, in detached leaflets grown at high RH, high MOV increased stomatal sensitivity to ABA since the amount of exogenous ABA required to decrease the transpiration rate was significantly reduced. This is the first study to show that high MOV increases stomatal functionality in leaves developed at high RH by reducing the stomatal pore length and aperture and enhancing stomatal sensitivity to ABA rather than increasing leaf [ABA]. |
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Elevated air movement enhances stomatal sensitivity to abscisic acid in leaves developed at high relative air humidityAbscisic acidRelative air humidityRosa x hybridaStomatal anatomyStomatal functionVapor pressure deficitWind speedHigh relative air humidity (RH ≥ 85%) during growth leads to stomata malfunctioning, resulting in water stress when plants are transferred to conditions of high evaporative demand. In this study, we hypothesized that an elevated air movement (MOV) 24 h per day, during the whole period of leaf development would increase abscisic acid concentration ([ABA]) enhancing stomatal functioning. Pot rose 'Toril' was grown at moderate (61%) or high (92%) RH combined with a continuous low (0.08 m s-1) or high (0.92 m s-1) MOV. High MOV reduced stomatal pore length and aperture in plants developed at high RH. Moreover, stomatal function improved when high MOV-treated plants were subjected to leaflet desiccation and ABA feeding. Endogenous concentration of ABA and its metabolites in the leaves was reduced by 35% in high RH, but contrary to our hypothesis this concentration was not significantly affected by high MOV. Interestingly, in detached leaflets grown at high RH, high MOV increased stomatal sensitivity to ABA since the amount of exogenous ABA required to decrease the transpiration rate was significantly reduced. This is the first study to show that high MOV increases stomatal functionality in leaves developed at high RH by reducing the stomatal pore length and aperture and enhancing stomatal sensitivity to ABA rather than increasing leaf [ABA].Veritati - Repositório Institucional da Universidade Católica PortuguesaCarvalho, Dália R. A.Torre, SisselKraniotis, DimitriosAlmeida, Domingos P. F.Heuvelink, EpCarvalho, Susana M. P.2021-06-08T19:33:55Z2015-05-282015-05-28T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.14/33523eng1664-462X10.3389/fpls.2015.003838493584369926074943000357010900001info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-08-15T01:42:10Zoai:repositorio.ucp.pt:10400.14/33523Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T18:27:15.703408Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Elevated air movement enhances stomatal sensitivity to abscisic acid in leaves developed at high relative air humidity |
title |
Elevated air movement enhances stomatal sensitivity to abscisic acid in leaves developed at high relative air humidity |
spellingShingle |
Elevated air movement enhances stomatal sensitivity to abscisic acid in leaves developed at high relative air humidity Carvalho, Dália R. A. Abscisic acid Relative air humidity Rosa x hybrida Stomatal anatomy Stomatal function Vapor pressure deficit Wind speed |
title_short |
Elevated air movement enhances stomatal sensitivity to abscisic acid in leaves developed at high relative air humidity |
title_full |
Elevated air movement enhances stomatal sensitivity to abscisic acid in leaves developed at high relative air humidity |
title_fullStr |
Elevated air movement enhances stomatal sensitivity to abscisic acid in leaves developed at high relative air humidity |
title_full_unstemmed |
Elevated air movement enhances stomatal sensitivity to abscisic acid in leaves developed at high relative air humidity |
title_sort |
Elevated air movement enhances stomatal sensitivity to abscisic acid in leaves developed at high relative air humidity |
author |
Carvalho, Dália R. A. |
author_facet |
Carvalho, Dália R. A. Torre, Sissel Kraniotis, Dimitrios Almeida, Domingos P. F. Heuvelink, Ep Carvalho, Susana M. P. |
author_role |
author |
author2 |
Torre, Sissel Kraniotis, Dimitrios Almeida, Domingos P. F. Heuvelink, Ep Carvalho, Susana M. P. |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Veritati - Repositório Institucional da Universidade Católica Portuguesa |
dc.contributor.author.fl_str_mv |
Carvalho, Dália R. A. Torre, Sissel Kraniotis, Dimitrios Almeida, Domingos P. F. Heuvelink, Ep Carvalho, Susana M. P. |
dc.subject.por.fl_str_mv |
Abscisic acid Relative air humidity Rosa x hybrida Stomatal anatomy Stomatal function Vapor pressure deficit Wind speed |
topic |
Abscisic acid Relative air humidity Rosa x hybrida Stomatal anatomy Stomatal function Vapor pressure deficit Wind speed |
description |
High relative air humidity (RH ≥ 85%) during growth leads to stomata malfunctioning, resulting in water stress when plants are transferred to conditions of high evaporative demand. In this study, we hypothesized that an elevated air movement (MOV) 24 h per day, during the whole period of leaf development would increase abscisic acid concentration ([ABA]) enhancing stomatal functioning. Pot rose 'Toril' was grown at moderate (61%) or high (92%) RH combined with a continuous low (0.08 m s-1) or high (0.92 m s-1) MOV. High MOV reduced stomatal pore length and aperture in plants developed at high RH. Moreover, stomatal function improved when high MOV-treated plants were subjected to leaflet desiccation and ABA feeding. Endogenous concentration of ABA and its metabolites in the leaves was reduced by 35% in high RH, but contrary to our hypothesis this concentration was not significantly affected by high MOV. Interestingly, in detached leaflets grown at high RH, high MOV increased stomatal sensitivity to ABA since the amount of exogenous ABA required to decrease the transpiration rate was significantly reduced. This is the first study to show that high MOV increases stomatal functionality in leaves developed at high RH by reducing the stomatal pore length and aperture and enhancing stomatal sensitivity to ABA rather than increasing leaf [ABA]. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-05-28 2015-05-28T00:00:00Z 2021-06-08T19:33:55Z |
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://hdl.handle.net/10400.14/33523 |
url |
http://hdl.handle.net/10400.14/33523 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
1664-462X 10.3389/fpls.2015.00383 84935843699 26074943 000357010900001 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799131989742190592 |