硬田头菇菌丝体对镉、铅及其复合污染的生长与富集响应  

Growth and enrichment responses of Agrocybe dura hyphae to single and combined pollution of cadmium and lead

作　　者：安鑫龙[1] 周启星[1] 李婷[1] 张宁[1] 

机构地区：[1]南开大学环境科学与工程学院环境污染过程与基准教育部重点实验室,天津300071

出　　处：《浙江大学学报（农业与生命科学版）》2008年第4期461-466,共6页Journal of Zhejiang University:Agriculture and Life Sciences

基　　金：高等学校科技创新工程重大项目培育资金资助项目(707011);海外青年学者合作研究基金资助项目(20428707);中俄合作研究资助项目(20611120015)

摘　　要：在PDA平板培养条件下,研究镉、铅及其复合污染对硬田头菇菌丝体生长的影响以及硬田头菇菌丝体对生长基质中镉、铅的生物富集作用.结果表明,在试验设置浓度范围内,菌丝生长势、菌落直径和菌丝体干重等均随着重金属浓度的增大而减弱(小)或降低.硬田头菇菌丝体对Cd、Pb均具有生物富集作用,并且随着重金属浓度的增大菌丝体中重金属含量逐渐增加.初步认为Cd、Pb复合污染促进菌丝体对Pb的吸收而抑制对Cd的吸收.The growth responses of Agrocybe dura hyphae to cadmium （Cd）, lead （Pb） and their combined pollution were examined under the condition of plate culture, as well as the action of the hyphae bioenriching Cd and Pb in the solid potato dextrose agar medium. The mycelial growth vigor, colony diameter and dry mycelial weight were reduced respectively with the concentration augmentation of Cd and Pb in the solid medium. The results also show that bioaccumulation of Cd and Pb in hyphae of Agrocybe dura existed and their contents increased with their concentrations enhancing in the solid medium, and bioaccumulation of Pb in the hyphae was promoted while that of Cd was inhibited under combined pollution of Cd and Pb.

关 键 词：硬田头菇 镉 铅 复合污染 生物富集 

分 类 号：S646[农业科学—蔬菜学] X131.2[农业科学—园艺学]