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《Journal of Anhui Agricultural Sciences》 2008-23
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Toxic Effects of Pb on Salvinia natans Alleviated by Exogenous Boron

WANG Xue(College of Life Science,Shandong University of Technology,Zibo,Shandong 255049)  
[Objective] The purpose was to discuss the mechanism that exogenous boron alleviated the toxic effects of Pb on plants.[Method] With Salvinia natans as tested material,the effects of exogenous boron on O2-·generation rate,the contents of chlorophyll and soluble protein,and the activities of superoxide dismutase(SOD),catalase(CAT) and peroxidase(POD) in the plant leaves under Pb stress were observed.[Result] With the increase of Pb concentration in culture medium,the contents of chlorophyll and soluble protein decreased gradually,the equilibrium of antioxidant enzyme systems was broken,O2-·generation rate rose rapidly.Exogenous boron addition maintained the equilibrium of antioxidant enzyme systems,lessened O2-·generation rate,increased the contents of chlorophyll and soluble protein in the leaves of Salvinia natans under Pb stress.[Conclusion] Exogenous boron could alleviate the toxic effects of Pb.
【Fund】: 山东理工大学博士科研启动经费(4041-406027)
【CateGory Index】: X173
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