Prognosis of physiological disorders in physic nut to N, P, and K deficiency during initial growth

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dc.contributor.authorSantos, Elcio Ferreira
dc.contributor.authorMacedo, Fernando Giovannetti
dc.contributor.authorZanchim, Bruno José
dc.contributor.authorLima, Giuseppina Pace Pereira [UNESP]
dc.contributor.authorLavres, José
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2018-12-11T17:32:04Z
dc.date.available2018-12-11T17:32:04Z
dc.date.issued2017-06-01
dc.description.abstractThe description of physiological disorders in physic nut plants deficient in nitrogen (N), phosphorus (P) and potassium (K) may help to predict nutritional imbalances before the appearance of visual symptoms and to guide strategies for early nutrient supply. The aim of this study was to evaluate the growth of physic nuts (Jatropha curcas L.) during initial development by analyzing the gas exchange parameters, nutrient uptake and use efficiency, as well as the nitrate reductase and acid phosphatase activities and polyamine content. Plants were grown in a complete nutrient solution and solutions from which N, P or K was omitted. The nitrate reductase activity, phosphatase acid activity, polyamine content and gas exchange parameters from leaves of N, P and K-deficient plants indicates earlier imbalances before the appearance of visual symptoms. Nutrient deficiencies resulted in reduced plant growth, although P- and K-deficient plants retained normal net photosynthesis (A), stomatal conductance (gs) and instantaneous carboxylation efficiency (k) during the first evaluation periods, as modulated by the P and K use efficiencies. Increased phosphatase acid activity in P-deficient plants may also contribute to the P use efficiency and to A and gs during the first evaluations. Early physiological and biochemical evaluations of N-, P- and K-starved plants may rely on reliable, useful methods to predict early nutritional imbalances.en
dc.description.affiliationUSP – University of São Paulo Center for Nuclear Energy in Agriculture
dc.description.affiliationUNESP – São Paulo State University
dc.description.affiliationUnespUNESP – São Paulo State University
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdFAPESP: 2011/15208-0
dc.format.extent249-258
dc.identifierhttp://dx.doi.org/10.1016/j.plaphy.2017.04.001
dc.identifier.citationPlant Physiology and Biochemistry, v. 115, p. 249-258.
dc.identifier.doi10.1016/j.plaphy.2017.04.001
dc.identifier.file2-s2.0-85017094729.pdf
dc.identifier.issn0981-9428
dc.identifier.scopus2-s2.0-85017094729
dc.identifier.urihttp://hdl.handle.net/11449/178781
dc.language.isoeng
dc.relation.ispartofPlant Physiology and Biochemistry
dc.relation.ispartofsjr1,125
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectJatropha curcas L.
dc.subjectNitrate reductase
dc.subjectNutrient deficiency
dc.subjectPhosphatase acid
dc.subjectPolyamines
dc.titlePrognosis of physiological disorders in physic nut to N, P, and K deficiency during initial growthen
dc.typeArtigo
unesp.author.orcid0000-0002-7183-4008[5]

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Artigos - Química e Bioquímica - IBB