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Published online ahead of print on 19 June 2009 as doi:ijs.0.004879-0
International Journal of Systematic and Evolutionary Microbiology 2009;59:1787.

Int J Syst Evol Microbiol (2009); DOI 10.1099/ijs.0.004879-0
© 2009 International Union of Microbiological Societies
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Bacillus korlensis sp. nov., a moderately halotolerant bacterium isolated from a sand soil sample in China

Lei Zhang, Yang Wang, Jun Dai, Yali Tang, Qiao Yang, Xuesong Luo and Chengxiang Fang1

Wuhan University

1 E-mail: cxfang{at}whu.edu.cn

A Gram-positive, rod-shaped, motile, spore-forming and moderately halotolerant bacterium, designated ZLC-26T, was isolated from a sand soil sample collected from Xinjiang Province, China, and was characterized by using a polyphasic taxonomic approach. This isolate grew optimally at 30-37 °C and pH 7.0-8.0. It grew at NaCl concentrations from 0 to 8 %, with optimum growth occurring at 0–2 % NaCl. Comparative 16S rRNA gene sequence analysis showed that strain ZLC-26T was closely related to members of the genus Bacillus, exhibiting the highest 16S rRNA gene sequence similarities to the type strains of Bacillus nealsonii (97.1 %), Bacillus shackletonii (97.0 %), Bacillus siralis (97.0 %), Bacillus circulans (96.7 %) and Bacillus pocheonensis (96.7 %). Strain ZLC-26T contained MK-7 as the predominant menaquinone. The diagnostic diamino acid in the cell-wall peptidoglycan was meso-diaminopimelic acid. The major cellular fatty acids were iso-C15 : 0, C16 : 1{omega}11c and anteiso-C15 : 0. The DNA G+C content was 38.2 mol%. These chemotaxonomic results supported the affiliation of strain ZLC-26T to the genus Bacillus. However, low DNA–DNA relatedness values and distinguishing phenotypic characteristics allowed genotypic and phenotypic differentiation of strain ZLC-26T from recognized Bacillus species. On the basis of the polyphasic evidence presented, strain ZLC-26T is considered to represent a novel species of the genus Bacillus, for which the name Bacillus korlensis sp. nov. is proposed. The type strain is ZLC-26T (=CCTCC AB 207172T=NRRL B-51302T).






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