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Aquaporin regulation in roots controls plant hydraulic conductance, stomatal conductance, and leaf water potential in Pinus radiata under water stress

hal.structure.identifierInstituto Canario de Investigaciones Agrarias [ICIA]
hal.structure.identifierScion [New Zealand]
dc.contributor.authorRODRÍGUEZ-GAMIR, Juan
hal.structure.identifierScion [New Zealand]
dc.contributor.authorXUE, Jianming
hal.structure.identifierUniversity of Waikato
dc.contributor.authorCLEARWATER, Michael J.
hal.structure.identifierScion [New Zealand]
dc.contributor.authorMEASON, Dean F
hal.structure.identifierScion [New Zealand]
dc.contributor.authorCLINTON, Peter W
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
hal.structure.identifierNicholas School of the Environment
dc.contributor.authorDOMEC, Jean-Christophe
dc.date.accessioned2024-04-08T12:04:50Z
dc.date.available2024-04-08T12:04:50Z
dc.date.issued2019
dc.identifier.issn0140-7791
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/196325
dc.description.abstractEnStomatal regulation is crucial for forest species performance and survival on drought-prone sites. We investigated the regulation of root and shoot hydraulics in three Pinus radiata clones exposed to drought stress and its coordination with stomatal conductance (g(s)) and leaf water potential (psi(leaf)). All clones experienced a substantial decrease in root-specific root hydraulic conductance (Kroot-r) in response to the water stress, but leaf-specific shoot hydraulic conductance (Kshoot-l) did not change in any of the clones. The reduction in Kroot-r caused a decrease in leaf-specific whole-plant hydraulic conductance (Kplant-l). Among clones, the larger the decrease in Kplant-l, the more stomata closed in response to drought. Rewatering resulted in a quick recovery of Kroot-r and g(s). Our results demonstrated that the reduction in Kplant-l, attributed to a down regulation of aquaporin activity in roots, was linked to the isohydric stomatal behaviour, resulting in a nearly constant psi(leaf) as water stress started. We concluded that higher Kplant-l is associated with water stress resistance by sustaining a less negative psi(leaf) and delaying stomatal closure.
dc.language.isoen
dc.publisherWiley
dc.subject.enaquaporin activity
dc.subject.endrought stress
dc.subject.enisohydric
dc.title.enAquaporin regulation in roots controls plant hydraulic conductance, stomatal conductance, and leaf water potential in Pinus radiata under water stress
dc.typeArticle de revue
dc.identifier.doi10.1111/pce.13460
dc.subject.halSciences du Vivant [q-bio]
dc.subject.halSciences de l'environnement
bordeaux.journalPlant, Cell and Environment
bordeaux.page717-729
bordeaux.volume42
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.issue2
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-02625196
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02625196v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Plant,%20Cell%20and%20Environment&rft.date=2019&rft.volume=42&rft.issue=2&rft.spage=717-729&rft.epage=717-729&rft.eissn=0140-7791&rft.issn=0140-7791&rft.au=RODR%C3%8DGUEZ-GAMIR,%20Juan&XUE,%20Jianming&CLEARWATER,%20Michael%20J.&MEASON,%20Dean%20F&CLINTON,%20Peter%20W&rft.genre=article


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