Potential of hydrogen (pH) differentially modulates cadmium stress response in abscisic acid-deficient sitiens tomato mutant

dc.contributor.authorPompeu, Georgia Bertoni
dc.contributor.authorAmbrosano, Guilherme Bovi
dc.contributor.authorVilhena, Milca Bartz
dc.contributor.authorCarvalho, Rogério Falleiros
dc.contributor.authorGratão, Priscila Lupino
dc.contributor.authorAndrino, Felipe
dc.contributor.authorLira, Simone Possedente De
dc.contributor.authorAzevedo, Ricardo Antunes
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2019-10-03T17:31:56Z
dc.date.available2019-10-03T17:31:56Z
dc.date.issued2019
dc.description.abstractABSTRACT Uptake of nutrients and cadmium (Cd) are dependent upon many factors, including plant species, ions concentration and pH. Tolerance to Cd-induced oxidative stress can be modulated by phytohormones such as abscisic acid (ABA), which induce the production of reactive oxygen species, activating proteins and enzymes involved in stress response and possibly stress tolerance. The present study aimed to evaluate the biochemical variations induced by Cd in ABA-deficient sitiens tomato mutant (sit) and its wild-type counterpart, Micro-Tom (MT), grown at different pH conditions. The plants were cultivated in nutrient solution (pH 5, 6 and 7; 20-days) and were then further grown over a 48-h period in 0 or 50 ?M CdCl2 at pH 6. Before Cd addition, the concentrations of nitrogen, sulfur, copper, iron and zinc were determined and variations in nutrients concentrations were observed. After Cd addition, sit roots grown at pH 5 and 7 did not exhibit differences in ascorbate peroxidase (APX) activity in 0 or 50 ?M CdCl2, and sit root grown at pH 6 exhibited lower glutathione reductase (GR) activity in the presence of Cd. Moreover, sit shoot grown at pH 5 showed decreased activities of superoxide dismutase (SOD), Mn-SOD II and Cu/Zn-SOD V, in 0 and 50 ?M CdCl2. The results indicated that pH modulates the plant nutrition in a complex way and may involve multiple ABA signaling pathways. Likewise, ABA status seems to be related with the Cd-translocation within the plant, suggesting that Cd, ABA and pH responses cannot be evaluated as isolated systems.en
dc.description.affiliationUniversidade de São Paulo Escola Superior de Agricultura Luiz de Queiroz Departamento de Genética
dc.description.affiliationUniversidade Estadual Paulista Faculdade de Ciências Agrárias e Veterinárias Departamento de Biologia Aplicada à Agropecuária
dc.description.affiliationUniversidade de São Paulo Escola Superior de Agricultura Luiz de Queiroz Departamento de Ciências Exatas
dc.description.affiliationUnespUniversidade Estadual Paulista Faculdade de Ciências Agrárias e Veterinárias Departamento de Biologia Aplicada à Agropecuária
dc.format.extent-
dc.identifierhttp://dx.doi.org/10.1590/1678-4499.2018326
dc.identifier.citationBragantia. Instituto Agronômico de Campinas, n. ahead, p. -, 2019.
dc.identifier.doi10.1590/1678-4499.2018326
dc.identifier.fileS0006-87052019005012102.pdf
dc.identifier.issn0006-8705
dc.identifier.lattes7498130194177896
dc.identifier.lattes4125344753100454
dc.identifier.orcid0000-0002-3578-6774
dc.identifier.orcid0000-0003-1270-7372
dc.identifier.scieloS0006-87052019005012102
dc.identifier.urihttp://hdl.handle.net/11449/183845
dc.language.isoeng
dc.publisherInstituto Agronômico de Campinas
dc.relation.ispartofBragantia
dc.rights.accessRightsAcesso aberto
dc.sourceSciELO
dc.subjectantioxidant enzymesen
dc.subjectMicro-Tomen
dc.subjectmineral nutritionen
dc.subjectoxidative stressen
dc.subjectSolanum lycopersicumen
dc.titlePotential of hydrogen (pH) differentially modulates cadmium stress response in abscisic acid-deficient sitiens tomato mutanten
dc.typeArtigo
unesp.author.lattes7498130194177896[5]
unesp.author.lattes4125344753100454[4]
unesp.author.orcid0000-0002-3578-6774[5]
unesp.author.orcid0000-0003-1270-7372[4]

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