[Current researches in microbial remediation of arsenic pollution]

Along with the rapid development of industries, arsenic contamination emerges as one of the world's most urgent environmental problems, especially for the developing countries. Microbial remediation of arsenic polluted environments is a key technique in practice, four aspects, i.e., the special adsorption of arsenic by micro-organisms, the transformation of arsenic speciation and the degradation and volatilization of arsenic compounds by micro-organisms, the effects to arsenic contamination of soil by the interactions between micro-organisms and plant roots, and the molecular biological mechanism of bioremediation for arsenic were reviewed in this paper. In the final section of this paper, the outlook of bioremediation for arsenic and the issues and realms which call for more researches in the future were discussed.