Effects of silicon and drought stress on biochemical characteristics of leaves of upland rice cultivars1

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dc.contributor.authorMauad, Munir
dc.contributor.authorCosta Crusciol, Carlos Alexandre [UNESP]
dc.contributor.authorNascente, Adriano Stephan
dc.contributor.authorFilho, Hélio Grassi [UNESP]
dc.contributor.authorPereira Lima, Giuseppina Pace [UNESP]
dc.contributor.institutionUniversidade Federal da Grande Dourados
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
dc.date.accessioned2018-12-11T17:02:35Z
dc.date.available2018-12-11T17:02:35Z
dc.date.issued2016-07-01
dc.description.abstractSilicon (Si) has beneficial effects on many crops, mainly under biotic and abiotic stress. Silicon can affect biochemical, physiological, and photosynthetic processes and, consequently, reduce drought stress. However, the effects of Si on rice (Oryza sativa L.) plants under drought stress are not well known. The objective of this study was to evaluate the effects of supplemental Si on proline content and peroxidase activity in upland rice plants in the presence and absence of drought stress. The experiment was conducted under greenhouse conditions and was arranged in completely randomized blocks in a 2 × 2 × 2 factorial scheme. Treatments comprised combinations of (1) presence or absence of Si supply (0 or 350 kg ha-1 of Si), (2) presence or absence of a water deficit (??0.050 MPa or ??0.025 MPa soil water potential values, respectively), and (3) two upland rice cultivars: Caiapo (traditional type) and Maravilha (modern type), with eight replications. Under water stress conditions, silicon fertilization reduced the proline content in the vegetative and reproductive phases of upland rice plants and increased peroxidase activity in the plants' reproductive phase, which could be indicative of stress tolerance.en
dc.description.affiliationFaculdade de Ciências Agrárias Universidade Federal da Grande Dourados
dc.description.affiliationDepartamento de Produão Vegetal Faculdade Ciências Agronômicas Fazenda Lageado Universidade Estadual Paulista Júlio de Mesquita Filho/UNESP, Campus Botucatu
dc.description.affiliationEmbrapa Arroz e Feijão, Rodovia GO-462, km 12 Rural, Caixa Postal 179
dc.description.affiliationDepartamento de Solos e Recursos Ambientais Faculdade de Ciências Agronômicas Fazenda Lageado Universidade Estadual Paulista Júlio de Mesquita Filho/UNESP, Campus Botucatu
dc.description.affiliationDepartamento de Química Instituto de Biociências Universidade Estadual Paulista Júlio de Mesquita Filho/UNESP, Campus Botucatu
dc.description.affiliationUnespDepartamento de Produão Vegetal Faculdade Ciências Agronômicas Fazenda Lageado Universidade Estadual Paulista Júlio de Mesquita Filho/UNESP, Campus Botucatu
dc.description.affiliationUnespDepartamento de Solos e Recursos Ambientais Faculdade de Ciências Agronômicas Fazenda Lageado Universidade Estadual Paulista Júlio de Mesquita Filho/UNESP, Campus Botucatu
dc.description.affiliationUnespDepartamento de Química Instituto de Biociências Universidade Estadual Paulista Júlio de Mesquita Filho/UNESP, Campus Botucatu
dc.format.extent532-539
dc.identifierhttp://dx.doi.org/10.5935/1806-6690.20160064
dc.identifier.citationRevista Ciencia Agronomica, v. 47, n. 3, p. 532-539, 2016.
dc.identifier.doi10.5935/1806-6690.20160064
dc.identifier.fileS1806-66902016000300532.pdf
dc.identifier.issn1806-6690
dc.identifier.issn0045-6888
dc.identifier.scieloS1806-66902016000300532
dc.identifier.scopus2-s2.0-84964681379
dc.identifier.urihttp://hdl.handle.net/11449/172887
dc.language.isoeng
dc.relation.ispartofRevista Ciencia Agronomica
dc.relation.ispartofsjr0,498
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectEnzyme
dc.subjectHydric deficiency
dc.subjectOryza sativa
dc.subjectPeroxidase
dc.subjectProline
dc.titleEffects of silicon and drought stress on biochemical characteristics of leaves of upland rice cultivars1en
dc.typeArtigo
unesp.author.lattes9281484833327774[2]
unesp.author.orcid0000-0003-4673-1071[2]
unesp.departmentSolos e Recursos Ambientais - FCApt

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Botucatu - FCA - Faculdade de Ciências Agronômicas
Artigos - Química e Bioquímica - IBB