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Stable Cu Isotope Ratios Show Changes in Cu Uptake and Transport Mechanisms in Vitis vinifera Due to High Cu Exposure

hal.structure.identifierGéosciences Environnement Toulouse [GET]
dc.contributor.authorBLOTEVOGEL, Simon
hal.structure.identifierGéosciences Environnement Toulouse [GET]
dc.contributor.authorOLIVA, Priscia
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorDENAIX, Laurence
hal.structure.identifierGéosciences Environnement Toulouse [GET]
dc.contributor.authorAUDRY, Stéphane
hal.structure.identifierGéosciences Environnement Toulouse [GET]
dc.contributor.authorVIERS, Jerome
hal.structure.identifierGéosciences Environnement Toulouse [GET]
dc.contributor.authorSCHRECK, Eva
dc.date.accessioned2024-04-08T11:49:20Z
dc.date.available2024-04-08T11:49:20Z
dc.date.issued2022
dc.identifier.issn1664-462X
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/195338
dc.description.abstractEnEven though copper (Cu) is an essential plant nutrient, it can become toxic under certain conditions. Toxic effects do not only depend on soil Cu content, but also on environmental and physiological factors, that are not well understood. In this study, the mechanisms of Cu bioavailability and the homeostasis of Vitis vinifera L. cv. Tannat were investigated under controlled conditions, using stable Cu isotope analysis. We measured Cu concentrations and δ 65 Cu isotope ratios in soils, soil solutions, roots, and leaves of grapevine plants grown on six different vineyard soils, in a 16-week greenhouse experiment. The mobility of Cu in the soil solutions was controlled by the solubility of soil organic matter. No direct relationship between Cu contents in soils or soil solutions and Cu contents in roots could be established, indicating a partly homeostatic control of Cu uptake. Isotope fractionation between soil solutions and roots shifted from light to heavy with increasing Cu exposure, in line with a shift from active to passive uptake. Passive uptake appears to exceed active uptake for soil solution concentrations higher than 270 µg L −1. Isotope fractionation between roots and leaves was increasingly negative with increasing root Cu contents, even though the leaf Cu contents did not differ significantly. Our results suggest that Cu isotope analysis is a sensitive tool to monitor differences in Cu uptake and translocation pathways even before differences in tissue contents can be observed.
dc.language.isoen
dc.publisherFrontiers
dc.subject.ensoil solution (pore water)
dc.subject.enbioavailability
dc.subject.entranslocation
dc.subject.engrapevine
dc.subject.enhumic acid
dc.subject.enVitis vinifera
dc.subject.encopper
dc.subject.enmetal stress response
dc.title.enStable Cu Isotope Ratios Show Changes in Cu Uptake and Transport Mechanisms in Vitis vinifera Due to High Cu Exposure
dc.typeArticle de revue
dc.identifier.doi10.3389/fpls.2021.755944
dc.subject.halSciences du Vivant [q-bio]/Biologie végétale/Botanique
dc.subject.halSciences du Vivant [q-bio]/Toxicologie/Ecotoxicologie
bordeaux.journalFrontiers in Plant Science
bordeaux.page755944
bordeaux.volume12
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-03522553
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03522553v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Frontiers%20in%20Plant%20Science&rft.date=2022&rft.volume=12&rft.spage=755944&rft.epage=755944&rft.eissn=1664-462X&rft.issn=1664-462X&rft.au=BLOTEVOGEL,%20Simon&OLIVA,%20Priscia&DENAIX,%20Laurence&AUDRY,%20St%C3%A9phane&VIERS,%20Jerome&rft.genre=article


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