Water deficit modifies the carbon isotopic composition of lipids, soluble sugars and leaves of Copaifera langsdorffii Desf. (Fabaceae)

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dc.contributor.authorSilva Bertholdi, Angelo Albano da [UNESP]
dc.contributor.authorCosta, Vladimir Eliodoro [UNESP]
dc.contributor.authorRodrigues, Angelica Lino [UNESP]
dc.contributor.authorRolim de Almeida, Luiz Fernando [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2018-11-26T17:44:47Z
dc.date.available2018-11-26T17:44:47Z
dc.date.issued2018-01-01
dc.description.abstractWater deficit is most frequent in forest physiognomies subjected to climate change. As a consequence, several tree species alter tissue water potential, gas exchange and production of carbon compounds to overcome damage caused by water deficiency. The working hypothesis, that a reduction in gas exchange by plants experiencing water deficit will affect the composition of carbon compounds in soluble sugars, lipids and vegetative structures, was tested on Copaifera langsdorffii. Stomatal conductance, leaf water potential, and CO2 assimilation rate declined after a period of water deficit. After rehydration, leaf water potential and leaf gas exchange did not recover completely. Water deficit resulted in C-13 enrichment in leaves, soluble sugars and root lipids. Furthermore, the amount of soluble sugars and root lipids decreased after water deficit. In rehydration, the carbon isotopic composition and amount of root lipids returned to levels similar to the control. Under water deficit, C-13-enriched in root lipids assists in the adjustment of cellular membrane turgidity and avoids damage to the process of water absorption by roots. These physiological adjustments permit a better understanding of the responses of Copaifera langsdorffi to water deficit.en
dc.description.affiliationUniv Estadual Paulista, Inst Biociencias Botucatu, Dept Bot, POB 510, BR-18618970 Botucatu, SP, Brazil
dc.description.affiliationUniv Estadual Paulista, Inst Biociencias Botucatu, Dept Fis & Biofis, POB 510, BR-18618970 Botucatu, SP, Brazil
dc.description.affiliationUniv Estadual Paulista, Ctr Isotopos Estaveis, Inst Biociencias Botucatu, POB 510, BR-18618970 Botucatu, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Inst Biociencias Botucatu, Dept Bot, POB 510, BR-18618970 Botucatu, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Inst Biociencias Botucatu, Dept Fis & Biofis, POB 510, BR-18618970 Botucatu, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Ctr Isotopos Estaveis, Inst Biociencias Botucatu, POB 510, BR-18618970 Botucatu, SP, Brazil
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.format.extent80-87
dc.identifierhttp://dx.doi.org/10.1590/0102-33062017abb0174
dc.identifier.citationActa Botanica Brasilica. Sao Paulo Sp: Soc Botanica Brasil, v. 32, n. 1, p. 80-87, 2018.
dc.identifier.doi10.1590/0102-33062017abb0174
dc.identifier.fileS0102-33062018000100080.pdf
dc.identifier.issn0102-3306
dc.identifier.scieloS0102-33062018000100080
dc.identifier.urihttp://hdl.handle.net/11449/163745
dc.identifier.wosWOS:000422933500010
dc.language.isoeng
dc.publisherSoc Botanica Brasil
dc.relation.ispartofActa Botanica Brasilica
dc.relation.ispartofsjr0,325
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectcarbon assimilation
dc.subjectcarbon isotopic composition
dc.subjectlipids
dc.subjectsoluble sugars
dc.subjectwater deficit
dc.titleWater deficit modifies the carbon isotopic composition of lipids, soluble sugars and leaves of Copaifera langsdorffii Desf. (Fabaceae)en
dc.typeArtigo
dcterms.rightsHolderSoc Botanica Brasil

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