Exogenous Sulphur Dioxide Induced Changes in Superoxide Dismutase, Peroxidation and Non- Protein SH Content in Mung Bean (Vigna Radiata) Seedlings

Abstract

This study investigated the effect of exogenous sulphur dioxide gas for different durations the superoxide dismutase, peroxidase, lipid peroxidation and non-protein SH content in mung bean (Vigna radiata) seedlings. It has been found that the activity of superoxide dismutase is enhanced at low concentration but decreased when the seedlings are exposed to higher concentration of SO 2 ; the peroxidase activity and lipid peroxidation decreased and the non-protein SH content increased significantly. The results indicate that superoxide dismutase, peroxidase, lipid peroxidation and non-protein SI-I content metabolisms are associated with the growth of the organism and are susceptible to alterations by exogenous sulphur dioxide stress.