Changes in photosynthesis and antioxidant metabolism of cotton (Gossypium hirsutum L.) plants in response to manganese stress

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dc.contributor.authorTavanti, Renan Francisco Rimoldi [UNESP]
dc.contributor.authorDavid Queiroz, Grace [UNESP]
dc.contributor.authorCaroline Da Rocha Silva, Anne [UNESP]
dc.contributor.authorMoya Peres, Walmor [UNESP]
dc.contributor.authorPereira Paixão, Amanda [UNESP]
dc.contributor.authorGalindo, Fernando Shintate [UNESP]
dc.contributor.authorMartins Silva, Vinícius [UNESP]
dc.contributor.authorBossolani, João William [UNESP]
dc.contributor.authorMoreira Melero, Mariana [UNESP]
dc.contributor.authorDe Souza Oliveira, Giovane [UNESP]
dc.contributor.authorFurlani Júnior, Enes [UNESP]
dc.contributor.authorDos Reis, André Rodrigues [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2019-10-06T17:14:27Z
dc.date.available2019-10-06T17:14:27Z
dc.date.issued2019-01-01
dc.description.abstractThis study aimed to assess the physiological and biochemical responses of cotton plants to manganese (Mn2+) nutrition. Four cotton genotypes (G1–TMG 47; G2–FM 975 WS; G3–TMG 11 WS and G4–IMA 8405 GLT) were grown in nutrient solution under two Mn2+ concentrations (2 and 200 µmol L−1) for 10 days. No visible symptoms of Mn2+ toxicity were observed in the genotypes tested. All genotypes showed a marked increase in leaf chlorophylls, pheophytins, carotenoids, sucrose and total sugars concentration in response to high Mn2+ in a nutrient solution. However, the net photosynthetic rate, stomatal conductance, internal carbon dioxide concentration and transpiration decreased in genotypes G1 and G2 growing under 200 µmol L−1. Antioxidant enzymes such as superoxide dismutase (SOD), ascorbate peroxidase (APX) and glutathione reductase (GR) activities increased in genotypes G1, G3 and G4. Cotton genotypes showed an increased leaf antioxidant and sugar metabolism as a possible strategy to mitigate oxidative stress. The decrease in the net photosynthetic rate and stomatal conductance; the increased antioxidant enzymes activities (SOD, APX and GR); and the increase in leaf sucrose and total sugar concentration were the main physiological and biochemical responses in cotton plants to Mn2+ stress.en
dc.description.affiliationDepartment of Crop Science and Social Economy São Paulo State University (UNESP)
dc.description.affiliationDepartment of Biosystems Engineering São Paulo State University (UNESP)
dc.description.affiliationUnespDepartment of Crop Science and Social Economy São Paulo State University (UNESP)
dc.description.affiliationUnespDepartment of Biosystems Engineering São Paulo State University (UNESP)
dc.identifierhttp://dx.doi.org/10.1080/03650340.2019.1637857
dc.identifier.citationArchives of Agronomy and Soil Science.
dc.identifier.doi10.1080/03650340.2019.1637857
dc.identifier.issn1476-3567
dc.identifier.issn0365-0340
dc.identifier.lattes6693510294017456
dc.identifier.orcid0000-0003-4030-612X
dc.identifier.scopus2-s2.0-85068599307
dc.identifier.urihttp://hdl.handle.net/11449/190477
dc.language.isoeng
dc.relation.ispartofArchives of Agronomy and Soil Science
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectAntioxidant metabolism
dc.subjectGossypium hirsutumL
dc.subjecthydrogen peroxide
dc.subjectphotosynthesis
dc.subjecttoxicity
dc.titleChanges in photosynthesis and antioxidant metabolism of cotton (Gossypium hirsutum L.) plants in response to manganese stressen
dc.typeArtigo
unesp.author.lattes3951143759106367[12]
unesp.author.lattes6693510294017456[11]
unesp.author.orcid0000-0002-6527-2520[12]
unesp.author.orcid0000-0003-4030-612X[11]

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