Are symplast tolerance to intense drought conditions and xylem vulnerability to cavitation coordinated? An integrated analysis of photosynthetic, hydraulic and leaf level processes in two Mediterranean drought-resistant species

10 Pags., 2 Tabls., 10 Figs.

Detalles Bibliográficos
Autores: Vilagrosa, Alberto, Morales, Fermín, Abadía Bayona, Anunciación, Bellot, J., Cochard, Hervé, Gil-Pelegrín, Eustaquio
Tipo de recurso: artículo
Fecha de publicación:2010
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/45345
Acceso en línea:http://hdl.handle.net/10261/45345
Access Level:acceso abierto
Palabra clave:Xylem cavitation
Chlorophyll fluorescence
Photosynthesis
Drought tolerance
Pistacia lentiscus
Quercus coccifera
Cell injury compartmentalization
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spelling Are symplast tolerance to intense drought conditions and xylem vulnerability to cavitation coordinated? An integrated analysis of photosynthetic, hydraulic and leaf level processes in two Mediterranean drought-resistant speciesVilagrosa, AlbertoMorales, FermínAbadía Bayona, AnunciaciónBellot, J.Cochard, HervéGil-Pelegrín, EustaquioXylem cavitationChlorophyll fluorescencePhotosynthesisDrought tolerancePistacia lentiscusQuercus cocciferaCell injury compartmentalization10 Pags., 2 Tabls., 10 Figs.In the last decades, plant resistance to drought conditions has been studied intensively both at whole-tree level and at tissue level. These studies have highlighted the role of xylem cavitation in the global resistance of plants to drought. In this paper, we investigate the coordination among several symplastic variables during intense drought conditions and its relationship to resistance to xylem cavitation. We selected 2-year-old seedlings of Pistacia lentiscus L. and Quercus coccifera L., two Mediterranean drought-resistant species with differences in both xylem vulnerability to cavitation and survival rates under field conditions. Drought provoked large decreases in photosynthetic rates and predawn Fv/Fm ratios, as well as less marked decreases in actual PSII efficiency (due to decreases in both intrinsic PSII efficiency and photochemical quenching). Photosynthetic pigment composition remained fairly unchanged down to water potentials of −8 MPa, despite inter-conversions within the xanthophyll cycle in both species. Cell membrane injury and proline accumulation followed similar patterns, and were much more intense in P. lentiscus than in Q. coccifera. Comparisons between variables revealed that both species: (i) followed a drought avoidance strategy, (ii) were very resistant to drought conditions at symplastic level, and (iii) showed an overall good relationship between apoplast (xylem cavitation) and symplast resistance (membrane stability, PSII functionality, proline accumulation and pigment composition). Differences between species in functional symplastic and apoplastic characteristics are discussed.We thank JS Pereira (ISA, Portugal) for helpful suggestions and comments on a preliminary version of the manuscript. We also thank CITA-DGA for technical support, Carmen Pérez for her help with proline analyses and J. Scheiding for the English revision of the manuscript. This work was supported by Generalitat Valenciana R&D projects (Grupos 03/155 and GV 05/208), the Spanish Ministry of Environment (MARM, Project ESTRES 063/SGTB/2007/7.1), MICINN (SUM2008-00004-C03-03 and CGL2008-03649) and Consolider-Ingenio (GRACCIE CSD2007-00067). FM, AA and EGP wish to thank the Gobierno de Aragón (A03 and A54 research groups) for financial support.Peer reviewedElsevierConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201220122010info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/45345reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/j.envexpbot.2010.04.013Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/453452026-05-22T06:33:51Z
dc.title.none.fl_str_mv Are symplast tolerance to intense drought conditions and xylem vulnerability to cavitation coordinated? An integrated analysis of photosynthetic, hydraulic and leaf level processes in two Mediterranean drought-resistant species
title Are symplast tolerance to intense drought conditions and xylem vulnerability to cavitation coordinated? An integrated analysis of photosynthetic, hydraulic and leaf level processes in two Mediterranean drought-resistant species
spellingShingle Are symplast tolerance to intense drought conditions and xylem vulnerability to cavitation coordinated? An integrated analysis of photosynthetic, hydraulic and leaf level processes in two Mediterranean drought-resistant species
Vilagrosa, Alberto
Xylem cavitation
Chlorophyll fluorescence
Photosynthesis
Drought tolerance
Pistacia lentiscus
Quercus coccifera
Cell injury compartmentalization
title_short Are symplast tolerance to intense drought conditions and xylem vulnerability to cavitation coordinated? An integrated analysis of photosynthetic, hydraulic and leaf level processes in two Mediterranean drought-resistant species
title_full Are symplast tolerance to intense drought conditions and xylem vulnerability to cavitation coordinated? An integrated analysis of photosynthetic, hydraulic and leaf level processes in two Mediterranean drought-resistant species
title_fullStr Are symplast tolerance to intense drought conditions and xylem vulnerability to cavitation coordinated? An integrated analysis of photosynthetic, hydraulic and leaf level processes in two Mediterranean drought-resistant species
title_full_unstemmed Are symplast tolerance to intense drought conditions and xylem vulnerability to cavitation coordinated? An integrated analysis of photosynthetic, hydraulic and leaf level processes in two Mediterranean drought-resistant species
title_sort Are symplast tolerance to intense drought conditions and xylem vulnerability to cavitation coordinated? An integrated analysis of photosynthetic, hydraulic and leaf level processes in two Mediterranean drought-resistant species
dc.creator.none.fl_str_mv Vilagrosa, Alberto
Morales, Fermín
Abadía Bayona, Anunciación
Bellot, J.
Cochard, Hervé
Gil-Pelegrín, Eustaquio
author Vilagrosa, Alberto
author_facet Vilagrosa, Alberto
Morales, Fermín
Abadía Bayona, Anunciación
Bellot, J.
Cochard, Hervé
Gil-Pelegrín, Eustaquio
author_role author
author2 Morales, Fermín
Abadía Bayona, Anunciación
Bellot, J.
Cochard, Hervé
Gil-Pelegrín, Eustaquio
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Xylem cavitation
Chlorophyll fluorescence
Photosynthesis
Drought tolerance
Pistacia lentiscus
Quercus coccifera
Cell injury compartmentalization
topic Xylem cavitation
Chlorophyll fluorescence
Photosynthesis
Drought tolerance
Pistacia lentiscus
Quercus coccifera
Cell injury compartmentalization
description 10 Pags., 2 Tabls., 10 Figs.
publishDate 2010
dc.date.none.fl_str_mv 2010
2012
2012
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/45345
url http://hdl.handle.net/10261/45345
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1016/j.envexpbot.2010.04.013
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,223283

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