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Linking drought‐induced xylem embolism resistance to wood anatomical traits in Neotropical trees

hal.structure.identifierEcologie des forêts de Guyane [UMR ECOFOG]
hal.structure.identifierBotanique et Modélisation de l'Architecture des Plantes et des Végétations [UMR AMAP]
dc.contributor.authorLEVIONNOIS, Sébastien
hal.structure.identifierUniversity of Ulm [UUlm]
dc.contributor.authorJANSEN, Steven
hal.structure.identifierEcologie des forêts de Guyane [UMR ECOFOG]
dc.contributor.authorWANDJI, Ruth Tchana
hal.structure.identifierEcologie des forêts de Guyane [UMR ECOFOG]
hal.structure.identifierDépartement Environnements et Sociétés [Cirad-ES]
dc.contributor.authorBEAUCHÊNE, Jacques
hal.structure.identifierEcologie des forêts de Guyane [UMR ECOFOG]
dc.contributor.authorZIEGLER, Camille
hal.structure.identifierEcologie des forêts de Guyane [UMR ECOFOG]
dc.contributor.authorCOSTE, Sabrina
hal.structure.identifierEcologie des forêts de Guyane [UMR ECOFOG]
dc.contributor.authorSTAHL, Clément
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorDELZON, Sylvain
hal.structure.identifierEcologie des forêts de Guyane [UMR ECOFOG]
dc.contributor.authorAUTHIER, Louise
hal.structure.identifierBotanique et Modélisation de l'Architecture des Plantes et des Végétations [UMR AMAP]
hal.structure.identifierEcologie des forêts de Guyane [UMR ECOFOG]
dc.contributor.authorHEURET, Patrick
dc.date.issued2021
dc.identifier.issn0028-646X
dc.description.abstractEnDrought-induced xylem embolism is considered to be one of the main factors driving mortality in woody plants worldwide. Although several structure-functional mechanisms have been tested to understand the anatomical determinants of embolism resistance, there is a need to study this topic by integrating anatomical data for many species. We combined optical, laser, and transmission electron microscopy to investigate vessel diameter, vessel grouping, and pit membrane ultrastructure for 26 tropical rainforest tree species across three major clades (magnoliids, rosiids, and asteriids). We then related these anatomical observations to previously published data on drought-induced embolism resistance, with phylogenetic analyses. Vessel diameter, vessel grouping, and pit membrane ultrastructure were all predictive of xylem embolism resistance, but with weak predictive power. While pit membrane thickness was a predictive trait when vestured pits were taken into account, the pit membrane diameter-to-thickness ratio suggests a strong importance of the deflection resistance of the pit membrane. However, phylogenetic analyses weakly support adaptive co-evolution. Our results emphasize the functional significance of pit membranes for air-seeding in tropical rainforest trees, highlighting also the need to study their mechanical properties due to the link between embolism resistance and pit membrane diameter-to-thickness ratio. Finding support for adaptive co-evolution also remains challenging.
dc.description.sponsorshipRecherches Avancées sur l'Arbre et les Ecosytèmes Forestiers - ANR-11-LABX-0002
dc.description.sponsorshipCEnter of the study of Biodiversity in Amazonia - ANR-10-LABX-0025
dc.language.isoen
dc.publisherWiley
dc.subject.enTropical trees
dc.subject.enDrought‐induced embolism
dc.subject.enTransmission electron microscopy
dc.subject.enPit membrane
dc.subject.enVessel grouping
dc.subject.enXylem anatomy Bordered pits
dc.title.enLinking drought‐induced xylem embolism resistance to wood anatomical traits in Neotropical trees
dc.typeArticle de revue
dc.identifier.doi10.1111/nph.16942
dc.subject.halSciences du Vivant [q-bio]/Biodiversité/Systématique, phylogénie et taxonomie
dc.subject.halSciences du Vivant [q-bio]/Ecologie, Environnement/Ecosystèmes
dc.subject.halSciences du Vivant [q-bio]/Biologie végétale/Botanique
dc.subject.halSciences de l'environnement/Biodiversité et Ecologie
bordeaux.journalNew Phytologist
bordeaux.page1453-1466
bordeaux.volume229
bordeaux.issue3
bordeaux.peerReviewedoui
hal.identifierhal-02970855
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02970855v1
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