1887

Abstract

A novel haloalkalitolerant, rod-shaped bacterium, designated strain YIM 4-4, was isolated from the surface water of the Dugerno lake, a haloalkaline lake in Inner Mongolia. The taxonomy of strain YIM 4-4 was investigated by a polyphasic approach. Strain YIM 4-4 was Gram-stain-negative, strictly aerobic, non-motile and formed red colonies. Optimal growth conditions were 28 °C, pH 8.0–11.0 and 0.5–2 % NaCl. The major respiratory quinone was menaquinone-7 (MK-7). The polar lipid profile was composed predominantly of phosphatidylethanolamine, six unidentified polar lipids, one phospholipid and one aminolipid. The predominant cellular fatty acids (>5 %) were iso-C, iso-CI/anteiso-CB, iso-CG, iso-C 3-OH, Cω7/Cω6 and iso-C. The genomic DNA G+C content was 43.0 mol%. 16S rRNA gene sequence analysis indicated that the members of the genera , , and of the family (phylum ) were the most closely related, with 16S rRNA gene sequence similarities ranging from 93.6 to 94.2 %. Other members of the family showed sequence similarities < 93.0 %. On the basis of phenotypic, chemotaxonomic and phylogenetic properties, strain YIM 4-4 represents a novel species of a new genus, for which the name gen. nov., sp. nov. is proposed. The type strain is YIM 4-4 ( = CCTCC AB 2012966 = DSM 27929).

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2016-02-01
2019-10-20
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