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4388865 
Journal Article 
Effects of double stress on antioxidant enzyme activity in Vigna radiata (L.) Wilczek 
Siddiqui, ZS 
2013 
Yes 
Acta Botanica Croatica
ISSN: 0365-0588 
UNIV ZAGREB, FAC SCIENCE, DIV BIOLOGY 
ZAGREB 
72 
1 
145-156 
WOS:000318324600010 
The effects of double stress environment i.e. lead (heavy metal) and NaCl (saline) on the activity of antioxidant enzymes in Vigna radiata seedling were studied. The antioxidant activities of enzymes, i.e of superoxide dismutase, catalase, ascorbate peroxidase, guaiacol peroxidase, glutathione reductase and their activity proportions were examined. Superoxide dismutase, ascorbate peroxidase, guaiacol peroxidase and glutathione reductase activities were substantially increased in a combined stress environment as compared to catalase. Further, in comparison with catalase and ascorbate peroxidase, glutathione reductase showed increased activities together with superoxide dismutase in a combined stress environment. Superoxide dismutase and glutathione reductase showed higher activity proportion in combined treatment. Physiological role of these enzymes in stress tolerance mechanism is discussed. 
Antioxidant; catalase; enzyme activity; glutathione reductase; guaiacol peroxidase; scorbate peroxidase; seedling; stress; superoxide dismutase; Vigna radiata