微生物与重金属作用机理研究  

Study on the Interaction between Microorganisms and Heavy Metals

作　　者：吴海江[1] 茆灿泉[1] 郭红光[1] 

机构地区：[1]西南交通大学生命科学与工程学院,四川成都610031

出　　处：《安徽农业科学》2009年第11期5068-5071,共4页Journal of Anhui Agricultural Sciences

基　　金：国家高技术研究发展计划("863"计划)(2006AA06Z353);国家自然科学基金(30270041)

摘　　要：以微生物与重金属相互作用为对象,结合近年来国内外研究,系统地说明了5种主要分子作用机理,分别为细胞表面吸附、主动运输、细胞内隔绝、胞外沉淀及酶的解毒作用。对重金属产生抗性的基因位于微生物的染色体、质粒和转座子上。最后介绍了多种抗性菌株,并就研究和应用前景进行了分析。Many microorganisms demonstrate resistance to metals.Mainly five metal resistance mechanisms exist：cell surface adsorption,active transportation of the metal from the microorganism,intracellular sequestration of metals,extra cellular precipitation,enzymatic detoxification of a metal to a less toxic form.Genes located on chromosomes,plasmids,or transposons encoding specific resistance to a variety of metal ions.At last,common resistant strains for heavy metal were introduced,the study and application was summarized.

关 键 词：微生物 重金属 作用机理 生物修复 

分 类 号：S182[农业科学—农业基础科学]