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《Chinese Journal of Environmental Engineering》 2008-02
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Effects of arbuscular mycorrhizal fungi colonization on toxicity of soil contaminated by heavy metals to Vicia faba

Zhang Xuhong1,2 Guo Yanling1 Lin Aijun3 Huang Yizong1(1.Beijing City University,Beijing 100083;2.Department of Soil Environmental Sciences,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085;3.Department of Environmental Science and Engineering,Beijing University of Chemical Technology,Beijing 100029)  
Vicia faba was selected as a host plant in a greenhouse-pot-culture experiment to investigate the effects of arbuscular mycorrhizal fungi(AMF) colonization on the toxicity to Vicia faba induced by heavy metal contaminated soil.The results suggested that AMF colonization decreased the toxicity of heavy metals to Vicia faba.Compared with control,the P uptake was increased by AMF colonization but the biomass of mycorrhizal plants was not increased by AMF colonization.It showed large differences in uptakes of four heavy metals by mycorrhizal and nonmycorrhizal Vicia faba: AMF colonization enhanced the uptakes of Cu,Zn, Pb and Cd by Vicia faba.There existed large differences in DNA damage in the leaves of nonmycorrhizal and mycorrhizal plants detected by single cell gel electrophoresis,SCGE.The DNA damage in the leaves was increased by AMF colonization which was consistent with the increased metals uptake induced by AMF colonization.
【Fund】: 中国科学院知识创新工程重要方向项目(KSCX2-YW-N-41-05);; 北京化工大学青年教师科学研究基金资助项目(QN0603)
【CateGory Index】: X53
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