1887

Abstract

A Gram-positive, endospore-forming, alkali-tolerant, moderately halophilic bacterium, designated strain CH9d, was isolated from the sediment of Lake Chagannor in the Inner Mongolia Autonomous Region, China. The cells were rod-shaped and motile. Isolate CH9d grew at pH 5.8–10.0 (optimally at pH 8.5), at salinities of 3–20 % (w/v) marine salts (optimally at 10.0 %, w/v) and between 20 and 50 °C (optimally at 37 °C). The cell wall contained -diaminopimelic acid and the major respiratory isoprenoid quinone was MK-7. The predominant cellular fatty acids of strain CH9d were anteiso-C, anteiso-C, iso-C and iso-C and its polar lipids consisted of diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine and two unknown phospholipids. The G+C content of the DNA was 44.7 mol%. Strain CH9d exhibited a 16S rRNA gene sequence similarity value of only 91 % with respect to DSM 16966 and showed values below 91 % with respect to members of the genera , and . Strain CH9d could be clearly differentiated from its closest phylogenetic neighbours on the basis of several phenotypic, genotypic and chemotaxonomic features. Therefore, data from the polyphasic study support the placement of strain CH9d in a novel genus and species, for which the name gen. nov., sp. nov. is proposed. The type strain is CH9d (=CCM 7365=CECT 7154=CGMCC 1.6287=DSM 18087).

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2007-10-01
2019-12-09
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