Journal
RUSSIAN JOURNAL OF PLANT PHYSIOLOGY
Volume 52, Issue 2, Pages 205-208Publisher
PLEIADES PUBLISHING INC
DOI: 10.1007/s11183-005-0031-8
Keywords
Brassica juncea; antioxidants; copper; lipid peroxidation; oxidative stress
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Brossica juncea L. eight-day-old seedlings treated with various concentrations (50-200 mu M) of copper for 48 h accumulated Cu more in the roots than in leaves. Accumulation of copper resulted in more active lipid peroxidation and depletion of glutathione (GSH) pools in both roots and shoots, which was attributed to copper-induced additional oxidative stress. Activities of ascorbate peroxidase and superoxide dismutase were higher in both roots and shoots while catalase activity increased in leaves but remained unchanged in roots in response to copper accumulation. Changes in lipid peroxidation, GSH content, and antioxidant enzyme activities suggest that oxidative damage may be involved in copper toxicity.
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