Antioxidative enzymatic protection in leaves of two contrasting cowpea cultivars under salinity

被引：41

作者：

Maia, J. M. ^{[1
]}

Costa de Macedo, C. E. ^{[2
]}

Voigt, E. L. ^{[1
]}

Freitas, J. B. S. ^{[1
]}

Silveira, J. A. G. ^{[1
]}

机构：

[1] Univ Fed Ceara, Inst Nacl Ciencia & Tecnol Salinidade, Dept Bioquim & Biol Mol, BR-60451970 Fortaleza, Ceara, Brazil

[2] Univ Fed Rio Grande do Norte, BR-59078670 Natal, RN, Brazil

来源：

BIOLOGIA PLANTARUM | 2010年 / 54卷 / 01期

关键词：

ascorbate peroxidase; oxidative damage; peroxidase; salt stress; salt tolerance; superoxide dismutase; Vigna unguiculata; WALL PEROXIDASE-ACTIVITY; REACTIVE OXYGEN; SUPEROXIDE-DISMUTASE; ASCORBATE PEROXIDASE; OXIDATIVE STRESS; SALT-TOLERANT; DIFFERENTIAL RESPONSE; GROWTH; L; SEEDLINGS;

D O I：

10.1007/s10535-010-0026-y

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

The aim of this work was to investigate the role of the antioxidant enzymes in salt tolerance comparing the salt-sensitive (Perola) and a salt-tolerant (Pitiuba) cultivar of cowpea [Vigna unguiculata (L.) Walp.]. Salt stress (100 mM NaCl for 8 d) reduced the leaf growth rate more in the sensitive cultivar. The salt-induced decrease in the relative water content, Na+ accumulation and increase in leaf electrolyte leakage was similar in both cultivars. Salt stress induced a higher increase in the activities of superoxide dismutase (SOD), ascorbate peroxidase (APX) and phenol peroxidase (POX) in the tolerant cultivar than in sensitive one.

引用

页码：159 / 163

页数：5

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