Comparative lipid peroxidation, antioxidant defense systems and proline content in roots of two rice cultivars differing in salt tolerance

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dc.contributor.authorDemiral, T
dc.contributor.authorTurkan, I
dc.date.accessioned2019-10-27T18:57:36Z
dc.date.available2019-10-27T18:57:36Z
dc.date.issued2005
dc.departmentEge Üniversitesien_US
dc.description.abstractThe changes in the activity of antioxidant enzymes such as superoxide dismutase (SOD: EC 1.15.1.1), catalase (CAT: EC 1.11.1.6), peroxidase (POX: EC 1.11.1.7), ascorbate peroxidase (APOX: EC 1.11.1.11) and glutathione reductase (GR: EC 1.6.4.2), free proline content, and the rate of lipid peroxidation level in terms of malondialdehyde (MDA) in roots of two rice cultivars (cvs.) differing in salt tolerance were investigated. Plants were subjected to three salt treatments, 0, 60, and 120 mol m(-3) NaCl for 7 days. The results showed that activated oxygen species may play a role in cellular toxicity of NaCl and indicated differences in activation of antioxidant defense systems between the two evs. The roots of both cultivars showed a decrease in GR activity with increase in salinity. CAT and APOX activities increased with increasing salt stress in roots of salt-tolerant cultivar Pokkah but decreased and showed no change, respectively, in roots of IR-28 cultivar. POX activity decreased with increasing NaCl concentrations in salt-tolerant Pokkah but increased in IR-28. SOD activity showed no change in roots of both cultivars under increasing salinity. MDA level in the roots increased under salt stress in sensitive IR-28 but showed no change in Pokkah. IR-28 produced higher amount of proline under salt stress than in Pokkali. Increasing NaCl concentration caused a reduction in root fresh weight of Pokkah and root dry weight of IR-28. The results indicate that improved tolerance to salt stress in root tissues of rice plants may be accomplished by increased capacity of antioxidative system. (c) 2004 Elsevier B.V All rights reserved.en_US
dc.identifier.doi10.1016/j.envexpbot.2004.03.017
dc.identifier.endpage257en_US
dc.identifier.issn0098-8472
dc.identifier.issn1873-7307
dc.identifier.issn0098-8472en_US
dc.identifier.issn1873-7307en_US
dc.identifier.issue3en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage247en_US
dc.identifier.urihttps://doi.org/10.1016/j.envexpbot.2004.03.017
dc.identifier.urihttps://hdl.handle.net/11454/37340
dc.identifier.volume53en_US
dc.identifier.wosWOS:000228891300002en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherPergamon-Elsevier Science Ltden_US
dc.relation.ispartofEnvironmental and Experimental Botanyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectantioxidant enzymesen_US
dc.subjectmalondialdehydeen_US
dc.subjectprolineen_US
dc.subjectriceen_US
dc.subjectsalt stressen_US
dc.titleComparative lipid peroxidation, antioxidant defense systems and proline content in roots of two rice cultivars differing in salt toleranceen_US
dc.typeArticleen_US

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