Enhancement of salt tolerance in corn using Azospirillum brasilense: an approach on antioxidant systems

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dc.contributor.authorChecchio, Mirela Vantini [UNESP]
dc.contributor.authorde Cássia Alves, Rita
dc.contributor.authorde Oliveira, Kevein Ruas [UNESP]
dc.contributor.authorMoro, Gustavo Vitti [UNESP]
dc.contributor.authorSantos, Durvalina Maria Mathias dos [UNESP]
dc.contributor.authorGratão, Priscila Lupino [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionInstituto Nacional do Semiárido (INSA)
dc.date.accessioned2022-04-29T08:31:15Z
dc.date.available2022-04-29T08:31:15Z
dc.date.issued2021-01-01
dc.description.abstractSalinity has become one of the major factors limiting agricultural production. In this regard, different cost-effective management strategies such as the use of plant growth-promoting bacteria (PGPB) as inoculants to alleviate salt-stress conditions and minimize plant productivity losses have been used in agricultural systems. The aim of this study was to characterize induced antioxidant responses in corn through inoculation with Azospirillum brasilense and examine the relationship between these responses and the acquired salt-stress tolerance. Treatments were performed by combining sodium chloride (0 and 100 mM NaCl) through irrigation water with absence and presence of A. brasilense inoculation. The experiment was performed in a completely randomized design with four replications. Lipid peroxidation (malondialdehyde [MDA]), and nitrogen (N), sodium (Na+) and potassium (K+) contents, as well as dry biomass, glycine betaine, and antioxidant enzymes activities such as of superoxide dismutase (SOD, EC 1. 15. 1. 1), glutathione reductase (GR, EC 1. 6. 4. 2), guaiacol peroxidase (GPOX, EC 1. 11. 1. 7), and glutathione peroxidase (GSH-PX, EC 1. 11. 1. 9) were determined. Overall results indicated that plants treated with 100 mM NaCl showed the most pronounced salt-stress damages with consequent increase in MDA content. However, inoculated plants showed an enhanced capacity to withstand or avoid salt-stress damages. These results could be attributed, at least in part, to the increased activity of antioxidant enzymes. Our results suggest that A. brasilense may confer tolerance to salt stress in corn plants enhancing antioxidant responses, primarily by the enzymes GSH-PX and GPOX, and the osmolyte glycine betaine.en
dc.description.affiliationUniversidade Estadual Paulista (UNESP) Faculdade de Ciências Agrárias e Veterinárias Depto. de Biologia Aplicada à Agropecuária
dc.description.affiliationNúcleo de Produção Vegetal Instituto Nacional do Semiárido (INSA)
dc.description.affiliationUniversidade Estadual Paulista (UNESP) Faculdade de Ciências Agrárias e Veterinárias Depto. de Produção Vegetal
dc.description.affiliationUnespUniversidade Estadual Paulista (UNESP) Faculdade de Ciências Agrárias e Veterinárias Depto. de Biologia Aplicada à Agropecuária
dc.description.affiliationUnespUniversidade Estadual Paulista (UNESP) Faculdade de Ciências Agrárias e Veterinárias Depto. de Produção Vegetal
dc.identifierhttp://dx.doi.org/10.1007/s10265-021-01332-1
dc.identifier.citationJournal of Plant Research.
dc.identifier.doi10.1007/s10265-021-01332-1
dc.identifier.issn1618-0860
dc.identifier.issn0918-9440
dc.identifier.scopus2-s2.0-85111166291
dc.identifier.urihttp://hdl.handle.net/11449/229210
dc.language.isoeng
dc.relation.ispartofJournal of Plant Research
dc.sourceScopus
dc.subjectAlleviate
dc.subjectAntioxidant enzymes
dc.subjectGrowth-promoting bacteria
dc.subjectOxidative stress
dc.subjectSalinity
dc.titleEnhancement of salt tolerance in corn using Azospirillum brasilense: an approach on antioxidant systemsen
dc.typeArtigo
unesp.author.orcid0000-0002-3578-6774[6]
unesp.departmentBiologia - FCAVpt
unesp.departmentProdução Vegetal - FCAVpt

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Jaboticabal - FCAV - Faculdade de Ciências Agrárias e Veterinárias