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Xylem resistance to embolism: presenting a simple diagnostic test for the open vessel artefact

hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorTORRES RUIZ, Jose Manuel
hal.structure.identifierLaboratoire de Physique et Physiologie Intégratives de l’Arbre en environnement Fluctuant [PIAF]
dc.contributor.authorCOCHARD, Hervé
hal.structure.identifierHawkesbury Institute for the Environment [Richmond] [HIE]
dc.contributor.authorCHOAT, Brendan
hal.structure.identifierInstitute of Systematic Botany and Ecology
dc.contributor.authorJANSEN, Steven
hal.structure.identifierHawkesbury Institute for the Environment [Richmond] [HIE]
hal.structure.identifierLaboratoire de Physique et Physiologie Intégratives de l’Arbre en environnement Fluctuant [PIAF]
dc.contributor.authorLOPEZ RODRIGUEZ, Rosa Ana
hal.structure.identifierFaculty of Forestry and Wood Sciences
dc.contributor.authorTOMÁŠKOVÁ, Ivana
hal.structure.identifierInstitute of Natural Resources and Agrobiology of Seville [IRNAS]
dc.contributor.authorPADILLA-DÍAZ, Carmen M.
hal.structure.identifierLaboratoire de Physique et Physiologie Intégratives de l’Arbre en environnement Fluctuant [PIAF]
dc.contributor.authorBADEL, Eric
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorBURLETT, Régis
hal.structure.identifierSynchrotron SOLEIL [SSOLEIL]
dc.contributor.authorKING, Andrew
hal.structure.identifierPlateforme Aquitaine de Caractérisation des Matériaux [PLACAMAT]
dc.contributor.authorLENOIR, Nicolas
hal.structure.identifierEcologie des Forêts Méditerranéennes [URFM]
dc.contributor.authorMARTIN-STPAUL, Nicolas
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorDELZON, Sylvain
dc.date.issued2017
dc.identifier.issn0028-646X
dc.description.abstractEnXylem vulnerability to embolism represents an essential trait for the evaluation of the impact of hydraulics in plant function and ecology. The standard centrifuge technique is widely used for the construction of vulnerability curves, although its accuracy when applied to species with long vessels remains under debate. We developed a simple diagnostic test to determine whether the open-vessel artefact influences centrifuge estimates of embolism resistance. Xylem samples from three species with differing vessel lengths were exposed to less negative xylem pressures via centrifugation than the minimum pressure the sample had previously experienced. Additional calibration was obtained from non-invasive measurement of embolism on intact olive plants by X-ray microtomography. Results showed artefactual decreases in hydraulic conductance (k) for samples with open vessels when exposed to a less negative xylem pressure than the minimum pressure they had previously experienced. X-Ray microtomography indicated that most of the embolism formation in olive occurs at xylem pressures below -4.0 MPa, reaching 50% loss of hydraulic conductivity at -5.3 MPa. The artefactual reductions in k induced by centrifugation underestimate embolism resistance data of species with long vessels. A simple test is suggested to avoid this open vessel artefact and to ensure the reliability of this technique in future studies.
dc.description.sponsorshipPlateforme d'Innovation " Forêt-Bois-Fibre-Biomasse du Futur " - ANR-10-EQPX-0016
dc.language.isoen
dc.publisherWiley
dc.rights.urihttp://creativecommons.org/licenses/by-sa/
dc.subjectxylème
dc.subjectartefact
dc.subjectactivité hydraulique
dc.subjectbiologie de la plante
dc.subjectcentrifugation
dc.subjectmicrotomographie
dc.subjectcourbe de vulnérabilité
dc.subjectembolie des vaisseaux
dc.subject.encentrifuge technique
dc.subject.enembolism
dc.subject.enmicro-CT
dc.subject.enolive
dc.subject.enxylem
dc.subject.enartifact
dc.subject.encentrifuging
dc.title.enXylem resistance to embolism: presenting a simple diagnostic test for the open vessel artefact
dc.typeArticle de revue
dc.identifier.doi10.1111/nph.14589
dc.subject.halSciences de l'environnement/Biodiversité et Ecologie
dc.description.sponsorshipEuropePlasticity and adaptation of hydraulic traits to overcome climate change
bordeaux.journalNew Phytologist
bordeaux.pagenp
bordeaux.volume215
bordeaux.issue1
bordeaux.peerReviewedoui
hal.identifierhal-01518575
hal.version1
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01518575v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=New%20Phytologist&rft.date=2017&rft.volume=215&rft.issue=1&rft.spage=np&rft.epage=np&rft.eissn=0028-646X&rft.issn=0028-646X&rft.au=TORRES%20RUIZ,%20Jose%20Manuel&COCHARD,%20Herv%C3%A9&CHOAT,%20Brendan&JANSEN,%20Steven&LOPEZ%20RODRIGUEZ,%20Rosa%20Ana&rft.genre=article


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