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Mechanisms for minimizing height-related stomatal conductance declines in tall vines.

hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
hal.structure.identifierNicholas School of the Environment
dc.contributor.authorDOMEC, Jean-Christophe
hal.structure.identifierNicholas School of the Environment
dc.contributor.authorBERGHOFF, Henry
hal.structure.identifierNicholas School of the Environment
hal.structure.identifierDepartment of Biology
dc.contributor.authorWAY, Danielle A.
hal.structure.identifierUniversity of Jerusalem
dc.contributor.authorMOSHELION, Menachem
hal.structure.identifierNicholas School of the Environment
dc.contributor.authorPALMROTH, Sari
hal.structure.identifierInstitute of Botany and Ecology
dc.contributor.authorKETS, Katre
hal.structure.identifierDepartment of Biology [New Mexico]
dc.contributor.authorHUANG, Cheng-Wei
hal.structure.identifierNicholas School of the Environment
hal.structure.identifierDepartment of Forest Sciences
dc.contributor.authorOREN, Ram
dc.date.accessioned2024-04-08T12:06:48Z
dc.date.available2024-04-08T12:06:48Z
dc.date.issued2019
dc.identifier.issn0140-7791
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/196428
dc.description.abstractEnThe ability to transport water through tall stems hydraulically limits stomatal conductance (gs), thereby constraining photosynthesis and growth. However, some plants are able to minimize this height‐related decrease in gs, regardless of path length. We hypothesized that kudzu (Pueraria lobata) prevents strong declines in gs with height through appreciable structural and hydraulic compensative alterations. We observed only a 12% decline in maximum gs along 15‐m‐long stems and were able to model this empirical trend. Increasing resistance with transport distance was not compensated by increasing sapwood‐to‐leaf‐area ratio. Compensating for increasing leaf area by adjusting the driving force would require water potential reaching −1.9 MPa, far below the wilting point (−1.2 MPa). The negative effect of stem length was compensated for by decreasing petiole hydraulic resistance and by increasing stem sapwood area and water storage, with capacitive discharge representing 8–12% of the water flux. In addition, large lateral (petiole, leaves) relative to axial hydraulic resistance helped improve water flow distribution to top leaves. These results indicate that gs of distal leaves can be similar to that of basal leaves, provided that resistance is highest in petioles, and sufficient amounts of water storage can be used to subsidize the transpiration stream.
dc.language.isoen
dc.publisherWiley
dc.subjectcapacitance
dc.subjectelectrical circuit analogy
dc.subjecthydraulic compensation
dc.subject.enPueraria lobata
dc.subject.enhydraulic resistance
dc.subject.enlianas
dc.subject.enlong-distance transport
dc.title.enMechanisms for minimizing height-related stomatal conductance declines in tall vines.
dc.typeArticle de revue
dc.identifier.doi10.1111/pce.13593
dc.subject.halSciences du Vivant [q-bio]
dc.subject.halSciences de l'environnement
bordeaux.journalPlant, Cell and Environment
bordeaux.volumeonline first
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-02619058
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02619058v1
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=online%20first&rft.eissn=0140-7791&rft.issn=0140-7791&rft.au=DOMEC,%20Jean-Christophe&BERGHOFF,%20Henry&WAY,%20Danielle%20A.&MOSHELION,%20Menachem&PALMROTH,%20Sari&rft.genre=article


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