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On the path from xylem hydraulic failure to downstream cell death

hal.structure.identifierLaboratoire de Physique et Physiologie Intégratives de l’Arbre en environnement Fluctuant [PIAF]
dc.contributor.authorMANTOVA, Marylou
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.authorBURLETT, Régis
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorDELZON, Sylvain
hal.structure.identifierSynchrotron SOLEIL [SSOLEIL]
dc.contributor.authorKING, Andrew
hal.structure.identifierCentro de Investigaciones Biológicas [CSIC]
dc.contributor.authorRODRIGUEZ-DOMINGUEZ, Celia
hal.structure.identifierUniversität Bayreuth
dc.contributor.authorAHMED, Mutez
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorTRUEBA, Santiago
hal.structure.identifierLaboratoire de Physique et Physiologie Intégratives de l’Arbre en environnement Fluctuant [PIAF]
dc.contributor.authorTORRES-RUIZ, José
dc.date.issued2023-02
dc.identifier.issn0028-646X
dc.description.abstractEnXylem hydraulic failure (HF) has been identified as a ubiquitous factor in triggering drought-induced tree mortality through the damage induced by the progressive dehydration of plant living cells. However, fundamental evidence of the mechanistic link connecting xylem HF to cell death has not been identified yet. The main aim of this study was to evaluate, at the leaf level, the relationship between loss of hydraulic function due to cavitation and cell death under drought conditions and discern how this relationship varied across species with contrasting resistances to cavitation. Drought was induced by withholding water from potted seedlings, and their leaves were sampled to measure their relative water content (RWC) and cell mortality. Vulnerability curves to cavitation at the leaf level were constructed for each species. An increment in cavitation events occurrence precedes the onset of cell mortality. A variation in cells tolerance to dehydration was observed along with the resistance to cavitation. Overall, our results indicate that the onset of cellular mortality occurs at lower RWC than the one for cavitation indicating the role of cavitation in triggering cellular death. They also evidenced a critical RWC for cellular death varying across species with different cavitation resistance.
dc.description.sponsorshipComprendre les effets combinés des stress hydriques et thermiques sur la mortalité des arbres - ANR-18-CE20-0005
dc.language.isoen
dc.publisherWiley
dc.subject.encavitation
dc.subject.encell dehydration
dc.subject.endrought
dc.subject.enmembrane leakage
dc.subject.enrelative water content
dc.title.enOn the path from xylem hydraulic failure to downstream cell death
dc.typeArticle de revue
dc.identifier.doi10.1111/nph.18578
dc.subject.halSciences de l'environnement
bordeaux.journalNew Phytologist
bordeaux.page793-806
bordeaux.volume237
bordeaux.issue3
bordeaux.peerReviewedoui
hal.identifierhal-04163312
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04163312v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=New%20Phytologist&rft.date=2023-02&rft.volume=237&rft.issue=3&rft.spage=793-806&rft.epage=793-806&rft.eissn=0028-646X&rft.issn=0028-646X&rft.au=MANTOVA,%20Marylou&COCHARD,%20Herv%C3%A9&BURLETT,%20R%C3%A9gis&DELZON,%20Sylvain&KING,%20Andrew&rft.genre=article


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