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To what extent is altitudinal variation of functional traits driven by genetic adaptation in European oak and beech ?

hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorBRESSON, Caroline
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorVITASSE, Yann
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorKREMER, Antoine
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorDELZON, Sylvain
dc.date.accessioned2022-10-12T12:51:28Z
dc.date.available2022-10-12T12:51:28Z
dc.date.issued2011
dc.identifier.issn0829-318X
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/157342
dc.description.abstractEnThe phenotypic responses of functional traits in natural populations are driven by genetic diversity and phenotypic plasticity. These two mechanisms enable trees to cope with rapid climate change. We studied two European temperate tree species (sessile oak and European beech), focusing on (i) in situ variations of leaf functional traits (morphological and physiological) along two altitudinal gradients and (ii) the extent to which these variations were under environmental and/or genetic control using a common garden experiment. For all traits, altitudinal trends tended to be highly consistent between species and transects. For both species, leaf mass per area displayed a positive linear correlation with altitude, whereas leaf size was negatively correlated with altitude. We also observed a significant increase in leaf physiological performance with increasing altitude: populations at high altitudes had higher maximum rates of assimilation, stomatal conductance and leaf nitrogen content than those at low altitudes. In the common garden experiment, genetic differentiation between populations accounted for 0–28% of total phenotypic variation. However, only two traits (leaf mass per area and nitrogen content) exhibited a significant cline. The combination of in situ and common garden experiments used here made it possible to demonstrate, for both species, a weaker effect of genetic variation than of variations in natural conditions, suggesting a strong effect of the environment on leaf functional traits. Finally, we demonstrated that intrapopulation variability was systematically higher than interpopulation variability, whatever the functional trait considered, indicating a high potential capacity to adapt to climate change.
dc.language.isoen
dc.publisherOxford University Press (OUP)
dc.subjectPHENOTYPIC VARIATIONS
dc.subject.enADAPTATION
dc.subject.enALTITUDE
dc.subject.enCOMMON GARDEN
dc.subject.enFUNCTIONAL TRAITS
dc.subject.enGENETIC VARIATION
dc.subject.enCHENE
dc.subject.enHETRE
dc.title.enTo what extent is altitudinal variation of functional traits driven by genetic adaptation in European oak and beech ?
dc.typeArticle de revue
dc.identifier.doi10.1093/treephys/tpr084
dc.subject.halSciences du Vivant [q-bio]/Sciences agricoles/Sylviculture, foresterie
bordeaux.journalTree Physiology
bordeaux.page1164-1174
bordeaux.volume31
bordeaux.hal.laboratoriesBioGeCo (Biodiversité Gènes & Communautés) - UMR 1202*
bordeaux.issue11
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-02651592
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02651592v1
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