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Reclassification of Salegentibacter catena Ying et al. 2007 as Salinimicrobium catena gen. nov., comb. nov. and description of Salinimicrobium xinjiangense sp. nov., a halophilic bacterium isolated from Xinjiang province in China

Jee-Min Lim^1,, Che Ok Jeon^2,, Seung Sik Lee², Dong-Jin Park¹, Li-Hua Xu³, Cheng-Lin Jiang³ and Chang-Jin Kim¹

¹ Korea Research Institute of Bioscience and Biotechnology, 52 Oeundong, Yusong, Daejeon 305-333, Republic of Korea
² Division of Applied Life Science, EB-NCRC, PMBBRC, Gyeongsang National University, Jinju, 660-701, Republic of Korea
³ Yunnan Institute of Microbiology, Yunnan University, Kunming, Yunnan, 650091, PR China

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

A Gram-negative, non-motile and moderately halophilic rod-shaped bacterium, designated strain BH206^T, was isolated from a saline lake of Xinjiang province in China. The isolate showed catalase-positive and oxidase-negative reactions and did not reduce nitrate. Phylogenetic analysis based on 16S rRNA gene sequences showed that the isolate was most closely related to [Salegentibacter] catena HY1^T with 95.8 % 16S rRNA gene sequence similarity, and formed a tight phyletic group with [Salegentibacter] catena HY1^T with a bootstrap value of 99 % within the family Flavobacteriaceae. However, strain BH206^T and [Salegentibacter] catena HY1^T formed a phyletic lineage distinct from other Salegentibacter species. The 16S rRNA gene sequence similarities of strain BH206^T with other related type species were lower than 94.6 %. On the basis of physiological and molecular properties, it is clear that [Salegentibacter] catena should be reclassified in the new genus Salinimicrobium as Salinimicrobium catena gen. nov., comb. nov. (type strain HY1^T=CGMCC 1.6101^T=JCM 14015^T) and that strain BH206^T represents a novel species within the genus Salinimicrobium, for which the name Salinimicrobium xinjiangense sp. nov. is proposed. The type strain of Salinimicrobium xinjiangense is BH206^T (=KCTC 12883^T=DSM 19287^T).

These authors contributed equally to this work.

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain BH206^T is EF520007.

A transmission electron micrograph of cells of strain BH206^T and a table showing the cellular fatty acid composition of strain BH206^T and related type strains are available as supplementary material with the online version of this paper.