Toxic Effect of Cd2+ on Potamogeton crispus Alleviated by Exogenous Nd3+
来源期刊：JOURNAL OF RARE EARTHS2005年第6期
论文作者：Ma Guangyue Xu Qinsong Wu Xiaoyan Wang Xue Wang Chuntao Hu Jinzhao Shi Guoxin
Key words：neodymium; heavy metal; cadmium; antioxidant; enzyme system; rare earths;
Abstract: The mitigation of toxic effect of Cd2 + on Potamogeton crispus L. by exogenous Nd3 + was studied. The result shows that activity of antioxidase (SOD, CAT, POD) is decreased, and the content of MDA increased. The content of different concentrations of Nd3 + for 5 d significantly improved the activity of SOD, POD and CAT in comparison with toxicity of Cd2+ , 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 Nd3 + , such ability of Nd3+ is weakened. The optimum concentration of Nd3+ is 10 ～ 15 mg·L-1.
Ma Guangyue1，Xu Qinsong1，Wu Xiaoyan1，Wang Xue1，Wang Chuntao1，Hu Jinzhao1，Shi Guoxin1
(1.School of Life Sciences, Nanjing Normal University, Nanjing 210097, China)
Abstract:The mitigation of toxic effect of Cd2 + on Potamogeton crispus L. by exogenous Nd3 + was studied. The result shows that activity of antioxidase (SOD, CAT, POD) is decreased, and the content of MDA increased. The content of different concentrations of Nd3 + for 5 d significantly improved the activity of SOD, POD and CAT in comparison with toxicity of Cd2+ , 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 Nd3 + , such ability of Nd3+ is weakened. The optimum concentration of Nd3+ is 10 ～ 15 mg·L-1.
Key words:neodymium; heavy metal; cadmium; antioxidant; enzyme system; rare earths;
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