Effects of Glomus mosseae on the toxicity of heavy metals to Vicia faba

作     者：ZHANG Xu-hong LIN Ai-jun CHEN Bao-dong WANG You-shan SMITH Sally E SMITH F Andrew 

作者机构：Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China Department of Environmental Engineering Beijing University of Chemical Technology Beijing 100029 China Lab of Soil and MicrobeDepartment of Plant Nutrition and Resource Agriculture and Forestry Academy of Beijing Beijing 100089 China Soil and Land Systems School of Earth and Environmental Sciences The University of Adelaide Adelaide South Australia 5005 Australia 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2006年第18卷第4期

页      面：721-726页

核心收录：

学科分类：12[管理学] 1204[管理学-公共管理] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 082803[工学-农业生物环境与能源工程] 08[工学] 0828[工学-农业工程] 120405[管理学-土地资源管理] 

基　　金：TheMinistryofScienceandTechnology China(No.2002CB410808)andtheNationalNaturalScienceFoundationofChina(No.40225002) 

主　　题：arbuscular mycorrhizal fungi (AMF) metal contamination metal toxicity DNA damage 

摘      要：A glasshouse pot experiment was conducted to investigate effects of the arbuscular mycorrhizal fungus Glomus mosseae on the growth of Vicia faba and toxicity induced by heavy metals （HMs） （Cu, Zn, Pb and Cd） in a field soil contaminated by a mixture of these metals. There was also uninoculation treatment （NM） simultaneously. Mycorrhizal （GM） plants have significantly increased growth and tolerance to toxicity induced by heavy metals compared with NM plants. P uptake was significantly increased in GM plants. Mycorrhizal symbiosis reduced the transportation of HMs fi＇om root to shoot by immobilizing HMs in the mycorrhizal, shown by increasing the ratios of HMs from root to shoot. Oxidative stress, which can induce DNA damage, is an important mechanism of heavy metal toxicity. GM treatment decreased oxidative stress by intricating antioxidative systems such as peroxidases and non-enzymic systems including soluble protein. The DNA damage induced by heavy metals was detected using comet assay, which showed DNA damage in the plants was decreased by the GM treatment.