The mitigation of toxic effect of Cd^2＋ on Potamogeton crispus L. by exogenous Nd^3＋ was studied. The result shows that activity of antioxidase （SOD, CAT, POD） is decreased, and the content of MDA increased. The c...The mitigation of toxic effect of Cd^2＋ on Potamogeton crispus L. by exogenous Nd^3＋ was studied. The result shows that activity of antioxidase （SOD, CAT, POD） is decreased, and the content of MDA increased. The content of chlorophyll and soluble protein are decreased by the treatment of 10 mg· L^-1 Cd^2＋ in Potamogeton crispus L. Addition of different concentrations of Nd^3＋ for 5 d significantly improved the activity of SOD, POD and CAT in comparison with toxicity of Cd^2＋ , and ranged from 14.0% - 30.0%, 8.8% - 47.3%, 4.6% - 15. 1% respectively. The degradation of chlorophyll and protein is alleviated, and generation of MDA reduced . But with the higher concentration of Nd^3＋ , such ability of Nd^3＋ is weakened. The optimum concentration of Nd^3＋ is 10- 15 mg· L^- 1展开更多
文摘The mitigation of toxic effect of Cd^2＋ on Potamogeton crispus L. by exogenous Nd^3＋ was studied. The result shows that activity of antioxidase （SOD, CAT, POD） is decreased, and the content of MDA increased. The content of chlorophyll and soluble protein are decreased by the treatment of 10 mg· L^-1 Cd^2＋ in Potamogeton crispus L. Addition of different concentrations of Nd^3＋ for 5 d significantly improved the activity of SOD, POD and CAT in comparison with toxicity of Cd^2＋ , and ranged from 14.0% - 30.0%, 8.8% - 47.3%, 4.6% - 15. 1% respectively. The degradation of chlorophyll and protein is alleviated, and generation of MDA reduced . But with the higher concentration of Nd^3＋ , such ability of Nd^3＋ is weakened. The optimum concentration of Nd^3＋ is 10- 15 mg· L^- 1
