Abstract
Four mine contaminated soils located in northwest of Guangxi autonomous region were selected for microbial community analysis. These mine soils were contaminated by chromium (Cr) and cadmium (Cd). Microbial communities were described by high-throughput sequencing technology, which showed 39 different phyla in four samples. Among these phyla, Proteobacteria was the most abundant phylum in all samples. Acidobacteria, Actinobacteria, Planctomycetes, Firmicutes, Gemmatimonadetes, Bacteroidetes and Chloroflexi showed higher relative abundances than other phyla. In addition, a wide diversity of bacteria with the potential of bioremediation, such as Sphingomonas, Lysobacter and Gemmatimonas were detected in the tested mine contaminated soils. The results of microbial community analysis will provide a new target for isolation of microorganisms with the potential of bioremediation and lay the foundation for a great enhancement of bioremediation ability through the genetic engineering modification of indigenous microorganisms in future.
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