Sponsor: National Nature Science Foundation of China (NNSFC)
Headed by Su Jianqiang
Date: 2011.01-2013.12
Asenic is recognized as carcinogenic and chronic exposure to arsenic results in a wide range of adverse health effects. Microbial metabolism plays an important role in arsenic mobilization and detoxification in paddy soil. In this proposal, we focus on the microbial transformation of arsenic during the redox process in paddy soil, trying to isolate bacteria involved in arsenic metabolism and characterize their divesity, and also the diversity of genes involved in arsenic transformation. Then we will investigate the community dynamics of arsenic metabolism bacteria and the abundance of key functional genes during the redox process of paddy soil under controled lab conditions. These results would be helpful to envaluate the role of microbes in biogeochemistry of arsenic, and could provide bacterial resources for microbial remediation of arsenic containminated soil.