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Draft genomic sequence of a chromateand sulfate-reducing Alishewanella strain with the ability to bioremediate Cr and Cd contamination

Xian Xia, Jiahong Li, Shuijiao Liao, Gaoting Zhou, Hui Wang, Liqiong Li, Biao Xu and Gejiao Wang

Alishewanella sp. WH16-1 (= CCTCC M201507) is a facultative anaerobic, motile, Gram-negative, rod-shaped bacterium isolated from soil of a copper and iron mine. This strain efficiently reduces chromate (Cr6+) to the much less toxic Cr3+. In addition, it reduces sulfate (SO4 2−) to S2−. The S2− could react with Cd2+ to generate precipitated CdS. Thus, strain WH16-1 shows a great potential to bioremediate Cr and Cd contaimination. Here we describe the features of this organism, together with the draft genome and comparative genomic results among strain WH16-1 and other Alishewanella strains. The genome comprises 3,488,867 bp, 50.4 % G + C content, 3,132 protein-coding genes and 80 RNA genes. Both putative chromate- and sulfate-reducing genes are identified.



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