Genes involved in arsenic transformation and resistance associated with different levels of arsenic-contaminated soils |
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Authors: | Lin Cai Guanghui Liu Christopher Rensing Gejiao Wang |
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Affiliation: | (1) State Key Laboratory of Agricultural Microbiolog, College of Life Science and Technology, Huazhong Agricultural University, 430070 Wuhan, PR China;(2) Department of Soil, Water and Environmental Science, The University of Arizona, AZ 85721 Tucson, USA |
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Abstract: | Background Arsenic is known as a toxic metalloid, which primarily exists in inorganic form [As(III) and As(V)] and can be transformed by microbial redox processes in the natural environment. As(III) is much more toxic and mobile than As(V), hence microbial arsenic redox transformation has a major impact on arsenic toxiCity and mobility which can greatly influence the human health. Our main purpose was to investigate the distribution and diversity of microbial arsenite-resistant species in three different arsenic-contaminated soils, and further study the As(III) resistance levels and related functional genes of these species. |
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