Evidence of drought stress memory in the facultative CAM, Aptenia cordifolia: Possible role of phytohormones

Although plant responses to drought stress have been studied in detail in several plant species, including CAM plants, the occurrence of stress memory and possible mechanisms for its regulation are still very poorly understood. In an attempt to better understand the occurrence and possible mechanism...

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Detalhes bibliográficos
Autores: Fleta Soriano, Eva, Pintó i Marijuan, Marta, Munné Bosch, Sergi
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2015
País:España
Recursos:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/112102
Acesso em linha:https://hdl.handle.net/2445/112102
Access Level:acceso abierto
Palavra-chave:Fulles
Hormones vegetals
Fisiologia vegetal
Leaves
Plant hormones
Plant physiology
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spelling Evidence of drought stress memory in the facultative CAM, Aptenia cordifolia: Possible role of phytohormonesFleta Soriano, EvaPintó i Marijuan, MartaMunné Bosch, SergiFullesHormones vegetalsFisiologia vegetalLeavesPlant hormonesPlant physiologyAlthough plant responses to drought stress have been studied in detail in several plant species, including CAM plants, the occurrence of stress memory and possible mechanisms for its regulation are still very poorly understood. In an attempt to better understand the occurrence and possible mechanisms of regulation of stress memory in plants, we measured the concentrations of phytohormones in Aptenia cordifolia exposed to reiterated drought, together with various stress indicators, including leaf water contents, photosynthesis and mechanisms of photo- and antioxidant protection. Results showed that plants exposed to drought stress responded differently if previously challenged with a first drought. Gibberellin levels decreased upon exposure to the first drought and remained lower in double-stressed plants compared with those exposed to stress for the first time. In contrast, abscisic acid levels were higher in double- than single-stressed plants. This occurred in parallel with alterations in hydroperoxide levels, but not with malondialdehyde levels, thus suggesting an increased oxidation state that did not result in oxidative damage in double-stressed plants. It is concluded that (i) drought stress memory occurs in double-stressed A. cordifolia plants, (ii) both gibberellins and abscisic acid may play a role in plant response to repeated periods of drought, and (iii) changes in abscisic acid levels in double-stressed plants may have a positive effect by modulating changes in the cellular redox state with a role in signalling, rather than cause oxidative damage to the cell.Public Library of Science (PLoS)2017201720152017info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion12 p.application/pdfhttps://hdl.handle.net/2445/112102Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: https://doi.org/10.1371/journal.pone.0135391PLoS One, 2015, vol. 10, p. e0135391https://doi.org/10.1371/journal.pone.0135391cc-by (c) Fleta Soriano, Eva et al., 2015http://creativecommons.org/licenses/by/3.0/esinfo:eu-repo/semantics/openAccessoai:recercat.cat:2445/1121022026-05-29T05:05:01Z
dc.title.none.fl_str_mv Evidence of drought stress memory in the facultative CAM, Aptenia cordifolia: Possible role of phytohormones
title Evidence of drought stress memory in the facultative CAM, Aptenia cordifolia: Possible role of phytohormones
spellingShingle Evidence of drought stress memory in the facultative CAM, Aptenia cordifolia: Possible role of phytohormones
Fleta Soriano, Eva
Fulles
Hormones vegetals
Fisiologia vegetal
Leaves
Plant hormones
Plant physiology
title_short Evidence of drought stress memory in the facultative CAM, Aptenia cordifolia: Possible role of phytohormones
title_full Evidence of drought stress memory in the facultative CAM, Aptenia cordifolia: Possible role of phytohormones
title_fullStr Evidence of drought stress memory in the facultative CAM, Aptenia cordifolia: Possible role of phytohormones
title_full_unstemmed Evidence of drought stress memory in the facultative CAM, Aptenia cordifolia: Possible role of phytohormones
title_sort Evidence of drought stress memory in the facultative CAM, Aptenia cordifolia: Possible role of phytohormones
dc.creator.none.fl_str_mv Fleta Soriano, Eva
Pintó i Marijuan, Marta
Munné Bosch, Sergi
author Fleta Soriano, Eva
author_facet Fleta Soriano, Eva
Pintó i Marijuan, Marta
Munné Bosch, Sergi
author_role author
author2 Pintó i Marijuan, Marta
Munné Bosch, Sergi
author2_role author
author
dc.subject.none.fl_str_mv Fulles
Hormones vegetals
Fisiologia vegetal
Leaves
Plant hormones
Plant physiology
topic Fulles
Hormones vegetals
Fisiologia vegetal
Leaves
Plant hormones
Plant physiology
description Although plant responses to drought stress have been studied in detail in several plant species, including CAM plants, the occurrence of stress memory and possible mechanisms for its regulation are still very poorly understood. In an attempt to better understand the occurrence and possible mechanisms of regulation of stress memory in plants, we measured the concentrations of phytohormones in Aptenia cordifolia exposed to reiterated drought, together with various stress indicators, including leaf water contents, photosynthesis and mechanisms of photo- and antioxidant protection. Results showed that plants exposed to drought stress responded differently if previously challenged with a first drought. Gibberellin levels decreased upon exposure to the first drought and remained lower in double-stressed plants compared with those exposed to stress for the first time. In contrast, abscisic acid levels were higher in double- than single-stressed plants. This occurred in parallel with alterations in hydroperoxide levels, but not with malondialdehyde levels, thus suggesting an increased oxidation state that did not result in oxidative damage in double-stressed plants. It is concluded that (i) drought stress memory occurs in double-stressed A. cordifolia plants, (ii) both gibberellins and abscisic acid may play a role in plant response to repeated periods of drought, and (iii) changes in abscisic acid levels in double-stressed plants may have a positive effect by modulating changes in the cellular redox state with a role in signalling, rather than cause oxidative damage to the cell.
publishDate 2015
dc.date.none.fl_str_mv 2015
2017
2017
2017
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/112102
url https://hdl.handle.net/2445/112102
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1371/journal.pone.0135391
PLoS One, 2015, vol. 10, p. e0135391
https://doi.org/10.1371/journal.pone.0135391
dc.rights.none.fl_str_mv cc-by (c) Fleta Soriano, Eva et al., 2015
http://creativecommons.org/licenses/by/3.0/es
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by (c) Fleta Soriano, Eva et al., 2015
http://creativecommons.org/licenses/by/3.0/es
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 12 p.
application/pdf
dc.publisher.none.fl_str_mv Public Library of Science (PLoS)
publisher.none.fl_str_mv Public Library of Science (PLoS)
dc.source.none.fl_str_mv Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.811543

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