Journal article: Bacillus arsenicus sp. nov., an As-resistant bacterium
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Bacillus arsenicus sp. nov., an arsenic-resistant bacterium
isolated from a siderite concretion in West Bengal, India
S. Shivaji, K. Suresh, Preeti Chaturvedi, Smita Dube and S. Sengupta
Int J Syst Evol Microbiol 55 (2005), 1123-1127.
Abstract: 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(7cis) 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).