RT Journal Article SR Electronic(1) A1 Shivaji, S. A1 Suresh, K. A1 Chaturvedi, Preeti A1 Dube, Smita A1 Sengupta, S.YR 2005 T1 Bacillus arsenicus sp. nov., an arsenic-resistant bacterium isolated from a siderite concretion in West Bengal, India JF International Journal of Systematic and Evolutionary Microbiology, VO 55 IS 3 SP 1123 OP 1127 DO https://doi.org/10.1099/ijs.0.63476-0 PB Microbiology Society, SN 1466-5034, AB Strain Con a/3T is a Gram-positive, motile, endospore-forming, rod-shaped and arsenic-resistant bacterium, which was isolated from a concretion of arsenic ore obtained from a bore-hole. The bacterium grew in the presence of 20 mM arsenate and 0·5 mM arsenite. Diaminopimelic acid was present in the cell wall peptidoglycan, MK-7 was the major menaquinone, and iso-C15 : 0, anteiso-C15 : 0, iso-C16 : 0 and C16 : 1(δ7cis) were the major fatty acids. Based on its phenotypic, chemotaxonomic and phylogenetic characteristics, strain Con a/3T was identified as a member of the genus Bacillus. It exhibited maximum similarity (97 %) at the 16S rRNA gene level with Bacillus barbaricus (DSM 14730T); however, the DNA–DNA relatedness value with B. barbaricus was 60 %. Strain Con a/3T also exhibited a number of phenotypic differences from B. barbaricus (DSM 14730T). Strain Con a/3T was therefore identified as representing a novel species of the genus Bacillus, for which the name Bacillus arsenicus sp. nov. is proposed. The type strain is Con a/3T (=MTCC 4380T=DSM 15822T=JCM 12167T)., UL https://www.microbiologyresearch.org/content/journal/ijsem/10.1099/ijs.0.63476-0