1887

Abstract

A Gram-positive, moderately halophilic, spore-forming bacterium, designated strain CG-15, was isolated from a soda lake, Lake Chagannor, in the Inner Mongolia Autonomous Region, China. The cells were found to be motile short rods with ellipsoidal, terminal and deforming endospores. Strain CG-15, a facultatively anaerobic bacterium, grew at pH 5.8–11.0 (optimally at pH 8.5), at 6–40 °C (optimally at 37 °C) and at salinities of 3–20 % (w/v) total salts (optimally at 7 % w/v). On the basis of the results of 16S rRNA gene sequence analysis, strain CG-15 was shown to belong to the genus (phylum ), showing the greatest phylogenetic similarity with respect to (96.0 %). The DNA G+C content of the novel isolate was found to be 53.8 mol%. The major cellular fatty acids of strain CG-15 were anteiso-C, iso-C and anteiso-C, and its polar lipids consisted of diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine and three different unidentified phospholipids. The analysis of the quinones showed that MK-7 was the major menaquinone. The peptidoglycan type was A1, with -diaminopimelic acid as the diagnostic diamino acid. On the basis of the data from this polyphasic study, strain CG-15 represents a novel species of the genus , for which the name sp. nov. is proposed. The type strain is CG-15 (=CCM 7371=CECT 7153=CGMCC 1.6292=DSM 18086).

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2007-09-01
2019-10-18
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vol. , part 9, pp. 2084 - 2088

Phase-contrast photomicrograph of cells of strain CG-15 , showing spore-forming rods. [PDF](75 KB)



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