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Antioxidant-enzymatic system of two sorghum genotypes differing in salt tolerance Braz. J. Plant Physiol.
Costa,Paulo Henrique Alves da; Neto,André Dias de Azevedo; Bezerra,Marlos Alves; Prisco,José Tarquinio; Gomes-Filho,Enéas.
Two forage sorghum genotypes were studied: CSF18 (salt-sensitive) and CSF20 (salt-tolerant). Shoot growth reduction as a result of salt stress was stronger in the salt sensitive genotype compared to the salt tolerant one. When the two genotypes were subjected to salt stress (75 mM NaCl) no significant change in lipid peroxidation was observed. However, salt stress induced increases in superoxide dismutase and catalase activities in both genotypes. These salt-induced increases were higher in the salt-tolerant genotype. Peroxidase activity was differentially affected by salt stress in the two genotypes. The activities of these peroxidases were decreased by salt stress in the salt-sensitive genotype and increased in the salt-tolerant genotype. In addition,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sorghum bicolor; Antioxidant-enzymatic system; Lipid peroxidation; Oxidative stress; Salinity.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202005000400003
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