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Indirect evidence for genetic differentiation in vulnerability to embolism in Pinus halepensis

hal.structure.identifierAgricultural Research Organization - the Volcani Center
dc.contributor.authorDAVID-SCHWARTZ, Rakefet
hal.structure.identifierAgricultural Research Organization - the Volcani Center
dc.contributor.authorPAUDEL, Indira
hal.structure.identifierAgricultural Research Organization - the Volcani Center
dc.contributor.authorMIZRACHI, Maayan
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorDELZON, Sylvain
hal.structure.identifierLaboratoire de Physique et Physiologie Intégratives de l'Arbre Fruitier et Forestier [PIAF]
dc.contributor.authorCOCHARD, Hervé
hal.structure.identifierAgricultural Research Organization - the Volcani Center
dc.contributor.authorLUKYANOV, Victor
hal.structure.identifierLaboratoire de Physique et Physiologie Intégratives de l'Arbre Fruitier et Forestier [PIAF]
dc.contributor.authorBADEL, Eric
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorCAPDEVILLE, Gaëlle
hal.structure.identifierAgricultural Research Organization - the Volcani Center
dc.contributor.authorSHKLAR, Galina
hal.structure.identifierAgricultural Research Organization - the Volcani Center
dc.contributor.authorCOHEN, Shabtai
dc.date.accessioned2022-10-12T13:33:12Z
dc.date.available2022-10-12T13:33:12Z
dc.date.issued2016
dc.identifier.issn1664-462X
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/158281
dc.description.abstractEnClimate change is increasing mean temperatures and in the eastern Mediterranean is expected to decrease annual precipitation. The resulting increase in aridity may be too rapid for adaptation of tree species unless their gene pool already possesses variation in drought resistance. Vulnerability to embolism, estimated by the pressure inducing 50% loss of xylem hydraulic conductivity (P50), is strongly associated with drought stress resistance in trees. Yet, previous studies on various tree species reported low intraspecific genetic variation for this trait, and therefore limited adaptive capacities to increasing aridity. Here we quantified differences in hydraulic efficiency (xylem hydraulic conductance) and safety (resistance to embolism) in four contrasting provenances of Pinus halepensis (Aleppo pine) in a provenance trial, which is indirect evidence for genetic differences. Results obtained with three techniques (bench dehydration, centrifugation and X-ray micro-CT) evidenced significant differentiation with similar ranking between provenances. Inter-provenance variation in P50 correlated with pit anatomical properties (torus overlap and pit aperture size). These results suggest that adaptation of P. halepensis to xeric habitats has been accompanied by modifications of bordered pit function driven by variation in pit aperture. This study thus provides evidence that appropriate exploitation of provenance differences will allow continued forestry with P. halepensis in future climates of the Eastern Mediterranean.
dc.language.isoen
dc.publisherFrontiers
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.subjectembolisme
dc.subjectdiversité génétique
dc.subjectpotentiel hydrique
dc.subjectxylème
dc.subject.enembolism
dc.subject.enwater potential
dc.subject.enprovenance trial
dc.subject.enxylem hydraulics
dc.subject.enborder pit
dc.subject.entorus-margo
dc.subject.enxylem conductivity
dc.subject.engenêtic variation
dc.subject.enxylem
dc.title.enIndirect evidence for genetic differentiation in vulnerability to embolism in Pinus halepensis
dc.typeArticle de revue
dc.identifier.doi10.3389/fpls.2016.00768
dc.subject.halSciences du Vivant [q-bio]/Biologie végétale
bordeaux.journalFrontiers in Plant Science
bordeaux.page13 p.
bordeaux.volume7
bordeaux.hal.laboratoriesBioGeCo (Biodiversité Gènes & Communautés) - UMR 1202*
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-01512018
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01512018v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Frontiers%20in%20Plant%20Science&rft.date=2016&rft.volume=7&rft.spage=13%20p.&rft.epage=13%20p.&rft.eissn=1664-462X&rft.issn=1664-462X&rft.au=DAVID-SCHWARTZ,%20Rakefet&PAUDEL,%20Indira&MIZRACHI,%20Maayan&DELZON,%20Sylvain&COCHARD,%20Herv%C3%A9&rft.genre=article


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