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

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dc.contributor.authorBattie-Laclau, Patricia
dc.contributor.authorLaclau, Jean-Paul [UNESP]
dc.contributor.authorDomec, Jean-Christophe
dc.contributor.authorChristina, Mathias
dc.contributor.authorBouillet, Jean-Pierre
dc.contributor.authorPiccolo, Marisa de Cassia
dc.contributor.authorMoraes Goncalves, Jose Leonardo de
dc.contributor.authorMoreira e Moreira, Rildo
dc.contributor.authorKrusche, Alex Vladimir
dc.contributor.authorBouvet, Jean-Marc
dc.contributor.authorNouvellon, Yann
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionCIRAD
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionBordeaux Sci Agro
dc.contributor.institutionDuke Univ
dc.contributor.institutionMontpellier SupAgro
dc.date.accessioned2014-12-03T13:11:35Z
dc.date.available2014-12-03T13:11:35Z
dc.date.issued2014-07-01
dc.description.abstractA 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 3yr 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.en
dc.description.affiliationUniv Sao Paulo, Ctr Energia Nucl Agr, BR-13400970 Piracicaba, SP, Brazil
dc.description.affiliationCIRAD, UMR Eco&Sols, F-34060 Montpellier, France
dc.description.affiliationUniv Estadual Sao Paulo Julio de Mesquita Filho, Dept Ciencia Florestal, BR-18610300 Botucatu, SP, Brazil
dc.description.affiliationUniv Sao Paulo, Escola Super Agr Luiz de Queiroz, BR-13418900 Piracicaba, SP, Brazil
dc.description.affiliationBordeaux Sci Agro, INRA, ISPA, UMR 1391, F-33170 Gradignan, France
dc.description.affiliationDuke Univ, Nicholas Sch Environm, Durham, NC 27708 USA
dc.description.affiliationMontpellier SupAgro, F-34060 Montpellier, France
dc.description.affiliationCIRAD, AGAP, UMR, F-34398 Montpellier, France
dc.description.affiliationUniv Sao Paulo, Dept Ciencias Atmosfer, BR-05508900 Sao Paulo, Brazil
dc.description.affiliationUnespUniv Estadual Sao Paulo Julio de Mesquita Filho, Dept Ciencia Florestal, BR-18610300 Botucatu, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipCIRAD
dc.description.sponsorshipUSP-COFECUB
dc.description.sponsorshipAGREENIUM (Plantotrem project)
dc.description.sponsorshipSOERE F-ORE-T
dc.description.sponsorshipUS Department of Energy Terrestrial Ecosystem Sciences program
dc.description.sponsorshipNational Science Foundation
dc.description.sponsorshipUSDA-NIFA
dc.description.sponsorshipIdFAPESP: 10/50663-8
dc.description.sponsorshipIdUSP-COFECUB2011-25
dc.description.sponsorshipIdUS Department of Energy Terrestrial Ecosystem Sciences program11-DE-SC-0006700
dc.description.sponsorshipIdNational Science FoundationNSF IOS-1146746
dc.description.sponsorshipIdNational Science FoundationNSF EAR-1344703
dc.format.extent401-413
dc.identifierhttp://dx.doi.org/10.1111/nph.12810
dc.identifier.citationNew Phytologist. Hoboken: Wiley-blackwell, v. 203, n. 2, p. 401-413, 2014.
dc.identifier.doi10.1111/nph.12810
dc.identifier.issn0028-646X
dc.identifier.urihttp://hdl.handle.net/11449/113283
dc.identifier.wosWOS:000337639800008
dc.language.isoeng
dc.publisherWiley-Blackwell
dc.relation.ispartofNew Phytologist
dc.relation.ispartofjcr7.433
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectdroughten
dc.subjecteucalypten
dc.subjectnutritionen
dc.subjectosmotic adjustmenten
dc.subjectrainfall exclusionen
dc.subjectstomatal conductanceen
dc.subjectwater deficiten
dc.titleEffects of potassium and sodium supply on drought-adaptive mechanisms in Eucalyptus grandis plantationsen
dc.typeArtigo
dcterms.licensehttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dcterms.rightsHolderWiley-Blackwell
unesp.author.orcid0000-0003-1068-5448[7]
unesp.author.orcid0000-0003-3618-756X[4]
unesp.author.orcid0000-0003-1920-3847[11]
unesp.author.orcid0000-0002-2506-214X[2]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências Agronômicas, Botucatupt
unesp.departmentCiência Florestal - FCApt

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Botucatu - FCA - Faculdade de Ciências Agronômicas