Toxic effects of Cr3+, Cr6+ and their combined pollution on Myriophyllum verticillatum
HU Ren1, LIN Qiu-qi1, ZHANG Xiao-lan2
1. Research Center of Hydrobioiogy, Jinan University, Guangzhou 510632; 2. South China Institute of Botany, Chinese Academy of Science, Guangzhou 510650
The paper briefly dealt with the toxic effects of Cr6+, Cr3+ and their combined pollution on the physiology of roots and leaves of high aquatic plant—Myriopllum verticillatum. The results show that Cr3+ could stimulate the growth of root when the treated concentration below 1 mg·L-1, while Cr6+ and the combination treatment show significant inhibition to the growth of root. The highest concentration of chlorophyll gained when treated with Cr3+ at concentration of 1 mg·L-1. The concentration of chlorophyll decreased as the increase of Cr6+ concentration. The concentration of soluble protein increased at first and decreased finally as the promotion of concentration of Cr6+, Cr3+ and their combined treatment. The same effects also took place on the activities of SOD, POD and CAT. The peak of concentration of protein occurred at the combination treatment of 1 mg·L-1. The results suggest Cr6+ and Cr3+ have corroborative pollution effect to the M. verticillatum, and Cr6+ is more poisonous than the Cr3+.
胡韧1, 林秋奇1, 张小兰2*. Cr3+,Cr6+及其复合污染对狐尾藻的毒害作用[J]. , 2003, 22(4): 327-331.
HU Ren1, LIN Qiu-qi1, ZHANG Xiao-lan2. Toxic effects of Cr3+, Cr6+ and their combined pollution on Myriophyllum verticillatum. , 2003, 22(4): 327-331.
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