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Cross-validation on saplings of High-Capacity Tensiometer and Thermocouple Psychrometer for continuous monitoring of xylem water potential

hal.structure.identifierUniversity of Strathclyde [Glasgow]
hal.structure.identifierBotanique et Modélisation de l'Architecture des Plantes et des Végétations [UMR AMAP]
dc.contributor.authorDAINESE, Roberta
hal.structure.identifierUniversity of Strathclyde [Glasgow]
dc.contributor.authorLIMA LOPES, Bruna De Carvalho Faria
hal.structure.identifierPolytechnic University of Bari / Politecnico di Bari
dc.contributor.authorTEDESCHI, Giuseppe
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorLAMARQUE, Laurent
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorDELZON, Sylvain
hal.structure.identifierBotanique et Modélisation de l'Architecture des Plantes et des Végétations [UMR AMAP]
hal.structure.identifierDépartement Systèmes Biologiques [Cirad-BIOS]
dc.contributor.authorFOURCAUD, Thierry
hal.structure.identifierUniversity of Strathclyde [Glasgow]
dc.contributor.authorTARANTINO, Alessandro
dc.date.issued2022
dc.identifier.issn0022-0957
dc.description.abstractEnAbstract The Pressure Chamber, the most popular method used to measure xylem water potential, is a discontinuous and destructive technique and therefore not suitable for automated monitoring. Continuous non-destructive monitoring could only be achieved until very recently via the Thermocouple Psychrometer (TP). We here present the High-Capacity Tensiometer (HCT) as alternative method for continuous non-destructive monitoring. This provided us with a unique chance to cross-validate the two instruments by installing them simultaneously on the same sapling stem. The HCT and the TP showed excellent agreement for xylem water potential < -0.5 MPa. Response to day/night cycles and watering was remarkably in phase, indicating excellent response time of both instruments despite substantially different working principles. For xylem water potential > -0.5 MPa, the discrepancies sometimes observed between the HCT and TP were mainly attributed to the kaolin paste used to establish contact between the xylem and the HCT, which becomes hydraulically poorly conductive in this range of water potential once dried beyond its air-entry value and subsequently re-wetted. Notwithstanding this limitation, which can be overcome by selecting a clay paste with higher air-entry value, the HCT has been shown to represent a valid alternative to the TP.
dc.language.isoen
dc.publisherOxford University Press (OUP)
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.subject.enHigh-Capacity Tensiometer
dc.subject.enPressure Chamber
dc.subject.enThermocouple Psychrometer
dc.subject.enXylem water potential
dc.subject.enWater tension
dc.subject.enWater status monitoring
dc.title.enCross-validation on saplings of High-Capacity Tensiometer and Thermocouple Psychrometer for continuous monitoring of xylem water potential
dc.typeArticle de revue
dc.identifier.doi10.1093/jxb/erab412
dc.subject.halSciences du Vivant [q-bio]/Biodiversité/Systématique, phylogénie et taxonomie
dc.subject.halSciences de l'environnement/Biodiversité et Ecologie
dc.subject.halSciences du Vivant [q-bio]/Biologie végétale/Botanique
dc.subject.halSciences du Vivant [q-bio]/Ecologie, Environnement/Ecosystèmes
bordeaux.journalJournal of Experimental Botany
bordeaux.page400-412
bordeaux.volume73
bordeaux.issue1
bordeaux.peerReviewedoui
hal.identifierhal-03356463
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03356463v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Experimental%20Botany&rft.date=2022&rft.volume=73&rft.issue=1&rft.spage=400-412&rft.epage=400-412&rft.eissn=0022-0957&rft.issn=0022-0957&rft.au=DAINESE,%20Roberta&LIMA%20LOPES,%20Bruna%20De%20Carvalho%20Faria&TEDESCHI,%20Giuseppe&LAMARQUE,%20Laurent&DELZON,%20Sylvain&rft.genre=article


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