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Effects of potassium and sodium supply on drought-adaptive mechanisms in Eucalyptus grandis plantations

hal.structure.identifierCentro de Energia Nuclear na Agricultura
dc.contributor.authorBATTIE-LACLAU, Patricia
hal.structure.identifierEcologie fonctionnelle et biogéochimie des sols et des agro-écosystèmes [UMR Eco&Sols]
hal.structure.identifierDepartamento de Ciencia Florestal
hal.structure.identifierEscola Superior de Agricultura Luiz de Queiroz
dc.contributor.authorLACLAU, Jean-Paul
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
hal.structure.identifierNicholas School of the Environment
dc.contributor.authorDOMEC, Jean-Christophe
hal.structure.identifierEcologie fonctionnelle et biogéochimie des sols et des agro-écosystèmes [UMR Eco&Sols]
dc.contributor.authorCHRISTINA, Mathias
hal.structure.identifierEcologie fonctionnelle et biogéochimie des sols et des agro-écosystèmes [UMR Eco&Sols]
hal.structure.identifierEscola Superior de Agricultura Luiz de Queiroz
dc.contributor.authorBOUILLET, Jean-Pierre
hal.structure.identifierCentro de Energia Nuclear na Agricultura
dc.contributor.authorDE CASSIA PICCOLO, Marisa
hal.structure.identifierEscola Superior de Agricultura Luiz de Queiroz
dc.contributor.authorDE MORAES GONÇALVES, José Leonardo
hal.structure.identifierEscola Superior de Agricultura Luiz de Queiroz
dc.contributor.authorMOREIRA, Rildo Moreira E
hal.structure.identifierCentro de Energia Nuclear na Agricultura
dc.contributor.authorKRUSCHE, Alex Vladimir
hal.structure.identifierAmélioration génétique et adaptation des plantes méditerranéennes et tropicales [UMR AGAP]
dc.contributor.authorBOUVET, Jean-Marc
hal.structure.identifierEcologie fonctionnelle et biogéochimie des sols et des agro-écosystèmes [UMR Eco&Sols]
hal.structure.identifierDepartamento de Ciências Atmosféricas
dc.contributor.authorNOUVELLON, Yann
dc.date.accessioned2024-04-08T12:11:49Z
dc.date.available2024-04-08T12:11:49Z
dc.date.issued2014
dc.identifier.issn0028-646X
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/196713
dc.description.abstractEnA basic understanding of nutrition effects on the mechanisms involved in tree response to drought is essential under a future drier climate. * A large-scale throughfall exclusion experiment was set up in Brazil to gain an insight into the effects of potassium (K) and sodium (Na) nutrition on tree structural and physiological adjustments to water deficit. * Regardless of the water supply, K and Na supply greatly increased growth and leaf area index (LAI) of Eucalyptus grandis trees over the first 3 yr after planting. Excluding 37% of throughfall reduced above-ground biomass accumulation in the third year after planting for K- supplied trees only. E. grandis trees were scarcely sensitive to drought as a result of the utilization of water stored in deep soil layers after clear-cutting the previous plantation. Trees coped with water restriction through stomatal closure (isohydrodynamic behavior), osmotic adjustment and decrease in LAI. Additionally, droughted trees showed higher phloem sap sugar concentrations. * K and Na supply increased maximum stomatal conductance, and the high water requirements of fertilized trees increased water stress during dry periods. Fertilization regimes should be revisited in a future drier climate in order to find the right balance between improving tree growth and limiting water shortage.
dc.language.isoen
dc.publisherWiley
dc.subjectadaptation à la sécheresse
dc.subjectdéficit hydrique
dc.subjecteucalyptus
dc.subjectfertilisation
dc.subjectbrésil
dc.subject.endrought
dc.subject.eneucalypt
dc.subject.ennutrition
dc.subject.enosmotic adjustment
dc.subject.enrainfall exclusion
dc.subject.enstomatal conductance
dc.subject.enwater deficit
dc.subject.enfertilization
dc.title.enEffects of potassium and sodium supply on drought-adaptive mechanisms in Eucalyptus grandis plantations
dc.typeArticle de revue
dc.identifier.doi10.1111/nph.12810
dc.subject.halSciences du Vivant [q-bio]/Biologie végétale
bordeaux.journalNew Phytologist
bordeaux.page401-413
bordeaux.volume203
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.issue2
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-01506324
hal.version1
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01506324v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=New%20Phytologist&rft.date=2014&rft.volume=203&rft.issue=2&rft.spage=401-413&rft.epage=401-413&rft.eissn=0028-646X&rft.issn=0028-646X&rft.au=BATTIE-LACLAU,%20Patricia&LACLAU,%20Jean-Paul&DOMEC,%20Jean-Christophe&CHRISTINA,%20Mathias&BOUILLET,%20Jean-Pierre&rft.genre=article


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