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| Advances in the research of arsenic methylation and volatilization by microorganisms |
| Received:April 25, 2018 |
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| KeyWord:arsenic;methylation;biogeochemical cycle;gene evolution;mechanism |
| Author Name | Affiliation | E-mail | | WANG Pei-pei | Research Center for Ecotoxicology and Environmental Remediation, Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China | | | CHEN Song-can | State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China | | | ZHU Yong-guan | State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China | | | SUN Guo-xin | State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China | gxsun@rcees.ac.cn |
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| Abstract: |
| Arsenic(As) is a toxic element with global concern. In natural environment, arsenic mainly exists in the inorganic forms. Arsenic methylation and volatilization driven by microorganisms play important roles in As biogeochemical cycle. Bio-volatilization of As can decrease As concentration in the soil, which could be used as a promising technology for As bioremediation. This paper reviewed recent advances in the principle of As methylation and the origin and evolution of As methyltransferase gene(arsM). It is speculated that the arsM genes were spread to other kingdoms of life through horizontal gene transfer. The predicted mechanisms of As methylation were elaborated as well. Considering the key role of As methylation in its biogeochemical cycle and environmental health, this review is of great significance for future research in this field. |
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