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Acclimation limits for embolism resistance and osmotic adjustment accompany the geographical dry edge of Mediterranean species

hal.structure.identifierInstitute of Plant Sciences, Volcani Center
hal.structure.identifierInstitute of Soil, Water and Environmental Sciences
dc.contributor.authorALON, Asaf
hal.structure.identifierInstitute of Soil, Water and Environmental Sciences
dc.contributor.authorCOHEN, Shabtai
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorBURLETT, Régis
hal.structure.identifierInstitute of Soil, Water and Environmental Sciences
dc.contributor.authorHOCHBERG, Uri
hal.structure.identifierInstitute of Soil, Water and Environmental Sciences
dc.contributor.authorLUKYANOV, Victor
hal.structure.identifierWeizmann Institute of Science [Rehovot, Israël]
dc.contributor.authorROG, Ido
hal.structure.identifierWeizmann Institute of Science [Rehovot, Israël]
dc.contributor.authorKLEIN, Tamir
hal.structure.identifierLaboratoire de Physique et Physiologie Intégratives de l’Arbre en environnement Fluctuant [PIAF]
dc.contributor.authorCOCHARD, Hervé
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorDELZON, Sylvain
hal.structure.identifierInstitute of Plant Sciences, Volcani Center
dc.contributor.authorDAVID‐SCHWARTZ, Rakefet
dc.date.accessioned2023-11-20T17:26:01Z
dc.date.available2023-11-20T17:26:01Z
dc.date.issued2023-03-14
dc.identifier.issn0269-8463
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/185850
dc.description.abstractEnSurvival and growth of woody species in the Mediterranean are mainly restricted by water availability. We tested the hypothesis that Mediterranean species acclimate their xylem vulnerability and osmotic potential along a precipitation gradient.We studied five predominant co-occurring Mediterranean species; Quercus calliprinos, Pistacia palaestina, Pistacia lentiscus, Rhamnus lycioides and Phillyrea latifolia, over two summers at three sites. The driest of the sites is the distribution edge for all the five species. We measured key hydraulic and osmotic traits related to drought resistance, including resistance to embolism (psi(50)) and the seasonal dynamics of water and osmotic potentials.The leaf water potentials (psi(l)) of all species declined significantly along the summer, reaching significantly lower psi(l) at the end of summer in the drier sites. Surprisingly, we did not find plasticity along the drought gradient in psi(50) or osmotic potentials. This resulted in much narrower hydraulic safety margins (HSMs) in the drier sites, where some species experienced significant embolism.Our analysis indicates that reduction in HSM to null values put Mediterranean species in embolism risk as they approach their hydraulic limit near the geographical dry edge of their distribution.
dc.language.isoen
dc.publisherWiley
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/
dc.subject.enclimate change
dc.subject.endrought resistance
dc.subject.enhydraulic failure
dc.subject.enhydraulic safety margins
dc.subject.enosmotic adjustment
dc.subject.entree hydraulics
dc.title.enAcclimation limits for embolism resistance and osmotic adjustment accompany the geographical dry edge of Mediterranean species
dc.typeArticle de revue
dc.identifier.doi10.1111/1365-2435.14289
dc.subject.halSciences de l'environnement
bordeaux.journalFunctional Ecology
bordeaux.page1421 - 1435
bordeaux.volume37
bordeaux.hal.laboratoriesBioGeCo (Biodiversité Gènes & Communautés) - UMR 1202*
bordeaux.issue5
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionINRAE
hal.identifierhal-04150557
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04150557v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Functional%20Ecology&rft.date=2023-03-14&rft.volume=37&rft.issue=5&rft.spage=1421%20-%201435&rft.epage=1421%20-%201435&rft.eissn=0269-8463&rft.issn=0269-8463&rft.au=ALON,%20Asaf&COHEN,%20Shabtai&BURLETT,%20R%C3%A9gis&HOCHBERG,%20Uri&LUKYANOV,%20Victor&rft.genre=article


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