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Provenance Differences in Water-Use Efficiency Among Sessile Oak Populations Grown in a Mesic Common Garden

hal.structure.identifierSILVA [SILVA]
dc.contributor.authorRABARIJAONA, Arivoara
hal.structure.identifierSILVA [SILVA]
dc.contributor.authorPONTON, Stéphane
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorBERT, Didier
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorDUCOUSSO, Alexis
hal.structure.identifierSILVA [SILVA]
dc.contributor.authorRICHARD, Béatrice
hal.structure.identifierSILVA [SILVA]
dc.contributor.authorLEVILLAIN, Joseph
hal.structure.identifierSILVA [SILVA]
dc.contributor.authorBRENDEL, Oliver
dc.date.issued2022-07-01
dc.description.abstractEnContext As a widespread species, sessile oak ( Quercus petraea ) populations occupy a wide range of ecological conditions, with large gradients of soil water availability. Drought acclimation involves a plastic increase in water-use efficiency (WUE), a trait that is easily measured using the carbon isotope composition (δ 13 C). However, the question remains whether WUE is an adaptive trait that impacts the fitness of trees in natural environments. Objectives and Methods To investigate whether WUE was a drought-adaptive trait, we studied a sample of 600 trees originating from 16 provenances, grown for 21 years in a common garden. Intrinsic WUE (WUE i ), estimated from tree ring δ 13 C, was compared among and within populations for three climatically contrasted years. The adaptive character of WUE i was evaluated by relating population mean WUE i , as well as its plasticity to drought, to the pedoclimatic conditions of their provenance sites. The contribution of WUE i to tree and population fitness was finally assessed from the relationship between WUE i and tree radial growth (GI). Results Significant differences in WUE i were found among populations but a much larger variability was observed within than among populations. The population WUE i of the juvenile oak trees growing in the relatively mesic conditions of the common garden showed no relationship with a modeled water deficit index for the provenance sites. However, a higher population WUE i plasticity to severe drought was related to a higher proportion of silt and carbon and a lower proportion of sand in the soil of the provenance sites. In response to severe drought, populations with a higher increase in WUE i showed a lower decrease in GI. Populations with lower GI reduction were from sites with higher vapor pressure deficit in May–July (VPD). For the wet year only, populations with a higher WUE i also had a higher GI. Conclusion The correlations observed at the common garden site between (i) population means of WUE i plasticity to drought and soil texture of the provenance sites, and (ii) GI plasticity to drought and VPD, suggested a local adaptation of sessile oak.
dc.description.sponsorshipDiversité de traits adaptatifs liés à l'utilisation de l'eau chez deux chênes blancs d'Europe tempérée - ANR-14-CE02-0013
dc.description.sponsorshipRecherches Avancées sur l'Arbre et les Ecosytèmes Forestiers - ANR-11-LABX-0002
dc.language.isoen
dc.publisherFrontiers Media
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.subject.enLocal adaptation
dc.subject.enSoil texture
dc.subject.enVapor pressure deficit
dc.subject.enphenotypic plasticity
dc.subject.enwood carbon isotope composition
dc.subject.enSocial status
dc.subject.enRelative extractable water
dc.subject.endrought response strategy
dc.title.enProvenance Differences in Water-Use Efficiency Among Sessile Oak Populations Grown in a Mesic Common Garden
dc.typeArticle de revue
dc.identifier.doi10.3389/ffgc.2022.914199
dc.subject.halSciences de l'environnement/Biodiversité et Ecologie
dc.subject.halSciences de l'environnement
dc.subject.halSciences du Vivant [q-bio]/Biologie végétale
bordeaux.journalFrontiers in Forests and Global Change
bordeaux.volume5
bordeaux.peerReviewedoui
hal.identifierhal-04019710
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04019710v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Frontiers%20in%20Forests%20and%20Global%20Change&rft.date=2022-07-01&rft.volume=5&rft.au=RABARIJAONA,%20Arivoara&PONTON,%20St%C3%A9phane&BERT,%20Didier&DUCOUSSO,%20Alexis&RICHARD,%20B%C3%A9atrice&rft.genre=article


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