biologia plantarum

International journal on Plant Life established by Bohumil Nìmec in 1959

Biologia plantarum 48:555-560, 2004 | DOI: 10.1023/B:BIOP.0000047152.07878.e7

Antioxidant Enzyme Responses to NaCl Stress in Cassia angustifolia

S. Agarwal1, V. Pandey1
1 Stress Physiology Laboratory, Department of Botany, JNV University, Jodhpur, Rajasthan, India

Seeds of Cassia angustifolia Vahl. were subjected to 0, 20, 50, 100 mM NaCl for 7 d in order to study the effect of salt stress on growth parameters, endogenous Na+ and Cl- concentrations, antioxidant system, lipid peroxidation, hydrogen peroxide, and proline contents. Salinity affected all of the considered parameters and caused a great reduction in plant biomass. The root and shoot length, fresh and dry mass and germination percentage were inhibited by NaCl treatments. These changes were associated with an increase in the Na+ and Cl- contents in the seedlings and increased activities of superoxide dismutase, catalase, peroxidase, and polyphenol oxidase. The increased enzyme activity coincided with decreased ascorbate content and enhanced H2O2 and proline content.

Keywords: ascorbate; catalase; hydrogen peroxide; oxidative stress; peroxidase; polyphenol oxidase; reactive oxygen species; salinity stress; senna; superoxide dismutase
Subjects: antioxidants, NaCl stress; ascorbate, ascorbic acid; Cassia angustifolia; catalase; germination; hydrogen peroxide; oxidative stress, salt stress; peroxidase; polyphenol oxidase; reactive oxygen species (ROS); salt stress, antioxidant enzyme responses; seed germination, antioxidant enzymes; senna, antioxidant enzymes; superoxide dismutase; thiobarbituric acid

Published: December 1, 2004  Show citation

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Agarwal, S., & Pandey, V. (2004). Antioxidant Enzyme Responses to NaCl Stress in Cassia angustifolia. Biologia plantarum48(4), 555-560. doi: 10.1023/B:BIOP.0000047152.07878.e7
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