Abstract

Generally, cesium ion (Cs+) which concentration of above the millimolar order is toxic to microorganisms. In this study we report the isolation and genomic characteristics of Bacillus sp. Cs-700, which can grow in media supplemented with 700mM Cs+ and was one of the most Cs+ tolerating bacteria been reported. Bacillus sp. Cs-700 was isolated from the South China Sea, and comprised one circular chromosome of 4,297,839bp (40.32mol%G+C content), containing 4366 predicted protein-coding sequences. We predict that numerous genes related to high cesium tolerating, and the genome of Bacillus sp. Cs-700 will be helpful for further insights into the mechanism of bacterial resistance to excess Cs+ conditions and the bioremediation of radiocesium-polluting environments.

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