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Published online ahead of print on 10 August 2009 as doi:ijs.0.010181-0
Int J Syst Evol Microbiol (2009); DOI 10.1099/ijs.0.010181-0
© 2009 International Union of Microbiological Societies
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Salsuginibacillus halophilus sp. nov., a halophilic bacterium isolated from Xiarinaoer soda lake in Inner Mongolia, China

Shu-Juan Cao, Jian-Hang Qu, Hong-Li Yuan1 and Bao-Zhen Li

China Agricultural University

1 E-mail: hlyuan{at}cau.edu.cn

A Gram-positive, rod-shaped, endospore-forming, halophilic, alkali-tolerant bacterium designated halo-1T was isolated from the sediment of Xiarinaoer soda lake located at the Inner Mongolia Autonomous Region, China. Strain halo-1T grew with presence of 9-30% (w/v) NaCl optimal at 19% and at pH 5-10 optimal at 9. The cell wall peptidoglycan contained meso-diaminopimelic acid and the major respiratory isoprenoid quinone was MK-7. The predominant cellular fatty acids of the isolate were anteiso-C15: 0 (58.35%), anteiso-C17: 0 (12.89%) and C16:0 (6.52%). Polar lipid contained diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, glycolipid, and a phospholipid of unknown structure. The DNA (G+C) mol% of the strain was 46.4 mol%. On the basis of 16S rRNA gene sequence similarity, strain halo-1T was shown the highest similarity of 93.9% to Salsuginibacillus kocurii DSM 18087T. Strain halo-1T could be clearly differentiated from its closest phylogenetic member on the basis of several phenotypic, genotypic, and chemotaxonomic features. Therefore, strain halo-1T represents a new species, for which the name Salsuginibacillus halophilus sp. nov. is proposed, with the type strain halo-1T (=CGMCC 1.7653T = NBRC 104934T).






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