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Bacillus seohaeanensis sp. nov., a halotolerant bacterium that contains L-lysine in its cell wall

¹ Korea Research Institute of Bioscience and Biotechnology, 52 Oeundong, Yusong, Daejeon 305-333, Republic of Korea
² Division of Environmental Biotechnology, PMBBRC, Gyeongsang National University, Jinju 660-701, Republic of Korea
³ The Key Laboratory for Microbial Resources of Ministry of Education, Yunnan Institute of Microbiology, Yunnan University, Kunming 650091, PR China

Correspondence
Chang-Jin Kim
changjin{at}kribb.re.kr

A halotolerant, round-endospore-forming, aerobic, Gram-positive bacterium, designated BH724^T, was isolated from a solar saltern at Taean in Korea. Cells of this strain were rod-shaped and found to be non-motile. Strain BH724^T grew at salinities of 0–10 % (w/v) NaCl with an optimum of 3 % (w/v) NaCl and at temperatures of 15–50 °C with an optimum of 40 °C. Phylogenetic analyses based on 16S rRNA gene sequences showed that strain BH724^T belonged to the genus Bacillus and that Bacillus aquimaris TF-12^T, Bacillus marisflavi TF-11^T and Bacillus vietnamensis JCM 11124^T were its closest neighbours, sharing 97.3, 97.2 and 97.0 % 16S rRNA gene sequence similarity, respectively. The genomic DNA G+C content was 39 mol% and the predominant menaquinone was MK-7. Its major cellular fatty acids were anteiso-C_{15 : 0}, iso-C_{15 : 0}, iso-C_{16 : 0} and iso-C_{14 : 0}. The peptidoglycan type was A1, linked directly through L-lysine. On the basis of morphological, chemotaxonomic, physiological and phylogenetic properties, strain BH724^T represents a novel species of the genus Bacillus, for which the name Bacillus seohaeanensis sp. nov. is proposed. The type strain is BH724^T (=KCTC 3913^T=DSM 16464^T).

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