Exogenous foliar ascorbic acid applications enhance salt-stress tolerance in peanut plants throughout an increase in the activity of major antioxidant enzymes

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dc.contributor.authorAlves, Rita de Cássia [UNESP]
dc.contributor.authorOliveira, Kevein Ruas [UNESP]
dc.contributor.authorLúcio, José Clebson Barbosa [UNESP]
dc.contributor.authorSilva, Jeferson dos Santos [UNESP]
dc.contributor.authorCarrega, Willians César [UNESP]
dc.contributor.authorQueiroz, Samira Furtado [UNESP]
dc.contributor.authorGratão, Priscila Lupino [UNESP]
dc.contributor.institutionCrop Production Center
dc.contributor.institutionInstitute of Plant Protection
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2023-03-01T21:09:51Z
dc.date.available2023-03-01T21:09:51Z
dc.date.issued2022-11-01
dc.description.abstractAlthough ascorbic acid (AsA) is an antioxidant that can protect plants from oxidative damages, little is known about physiological and biochemical responses of exogenous AsA-regulated antioxidant systems to stressful-conditions in peanut plants. This study aimed to evaluate the effects of AsA-foliar applications on antioxidant defense responses in peanut plants irrigated with saline water. The experiment was carried out in a completely randomized design with four treatments formed by combining and not AsA under salt-stressful conditions (control, 50 mM AsA, 50 mM NaCl and 50 mM NaCl + 50 mM AsA). AsA application was performed twice a week spraying plant shoot. After a period of 40 days post germination, plants were collected and evaluated for the following parameters: total chlorophyll and carotenoids contents; dry biomass; malondialdehyde (MDA) and H2O2 contents, superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), glutathione peroxidase (GSH-Px) and glutathione reductase (GR). AsA increased total chlorophyll and carotenoid contents, reduced Na+concentration, and oxidative damages by modifying antioxidant defense systems. Therefore, the exogenous application of AsA is an efficient strategy to withstand or avoid stress imposed by salt, which can be attributed to increased SOD, CAT, APX, GSH-Px and GR activities in peanut plants, and enhance salt tolerance.en
dc.description.affiliationSemi-Arid National Institute (INSA) Crop Production Center, Paraíba
dc.description.affiliationDepartment of Integrated Plant Protection Hungarian University of Agriculture and Life Sciences (MATE) Institute of Plant Protection, Páter Károly utca
dc.description.affiliationDepartment of Biology Applied to Agriculture São Paulo State University (UNESP), Jaboticabal, São Paulo
dc.description.affiliationDepartment of Soil and Fertilizers São Paulo State University (UNESP), Jaboticabal, São Paulo
dc.description.affiliationUnespDepartment of Biology Applied to Agriculture São Paulo State University (UNESP), Jaboticabal, São Paulo
dc.description.affiliationUnespDepartment of Soil and Fertilizers São Paulo State University (UNESP), Jaboticabal, São Paulo
dc.format.extent759-767
dc.identifierhttp://dx.doi.org/10.1016/j.sajb.2022.08.007
dc.identifier.citationSouth African Journal of Botany, v. 150, p. 759-767.
dc.identifier.doi10.1016/j.sajb.2022.08.007
dc.identifier.issn0254-6299
dc.identifier.scopus2-s2.0-85136571321
dc.identifier.urihttp://hdl.handle.net/11449/241555
dc.language.isoeng
dc.relation.ispartofSouth African Journal of Botany
dc.sourceScopus
dc.subjectArachis hypogea l.
dc.subjectOxidative stress
dc.subjectSalinity
dc.titleExogenous foliar ascorbic acid applications enhance salt-stress tolerance in peanut plants throughout an increase in the activity of major antioxidant enzymesen
dc.typeArtigo
unesp.author.orcid0000-0003-4190-2812 0000-0003-4190-2812[1]
unesp.author.orcid0000-0001-7722-8765[5]

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