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Int J Syst Evol Microbiol 59 (2009), 1620-1624; DOI  10.1099/ijs.0.006569-0
© 2009 International Union of Microbiological Societies

Gracilibacillus saliphilus sp. nov., a moderately halophilic bacterium isolated from a salt lake

Shu-Kun Tang1,{dagger}, Yun Wang2,{dagger}, Kai Lou2, Pei-Hong Mao3, Xiang Jin3, Cheng-Lin Jiang1, Li-Hua Xu1 and Wen-Jun Li1

1 The Key Laboratory for Microbial Resources of the Ministry of Education, PR China, and Laboratory for Conservation and Utilization of Bio-Resources, Yunnan Institute of Microbiology, Yunnan University, Kunming 650091, PR China
2 Xinjiang Institute of Microbiology, Xinjiang Academy of Agricultural Science, Urumqi, Xinjiang 830091, PR China
3 Institute of Ion Beam Biotechnology, College of Physics Science and Technology, Xinjiang University, Urumqi, Xinjiang 830008, PR China

Correspondence
Wen-Jun Li
wjli{at}ynu.edu.cn
or
liact{at}hotmail.com

A novel Gram-positive-staining, aerobic, spore-forming, rod-shaped bacterium, designated strain YIM 91119T, was isolated from Ebinur Lake in Xinjiang Province, north-west China. Cells were motile, produced terminal endospores and grew at pH 6.0–8.0 (optimally at pH 7.0), 4–45 °C (optimally at 28–37 °C) and 1–22 % (w/v) NaCl, (optimally at 10–15 %, w/v). Comparative 16S rRNA gene sequence analysis showed that strain YIM 91119T belongs to the genus Gracilibacillus, exhibiting the highest sequence similarity with respect to the type strain of Gracilibacillus orientalis (97.8 %); the next most similar 16S rRNA gene sequences were those of the type strains of Gracilibacillus boraciitolerans (96.8 %), Gracilibacillus dipsosauri (96.5 %) and Gracilibacillus halotolerans (95.8 %). DNA–DNA hybridization with G. orientalis AS 1.4250T showed a relatedness of 55 %. The major fatty acids of strain YIM 91119T were anteiso-C15 : 0, iso-C15 : 0 and anteiso-C17 : 0. The peptidoglycan type was A1{gamma} (directly cross-linked meso-diaminopimelic acid). The genomic DNA G+C content was 40.1 mol% and the predominant respiratory quinone was MK-7. The major polar lipids were diphosphatidylglycerol, phosphatidylglycerol and phosphatidylethanolamine. On the basis of the evidence from this polyphasic study, strain YIM 91119T represents a novel species of the genus Gracilibacillus, for which the name Gracilibacillus saliphilus sp. nov. is proposed, with YIM 91119T (=DSM 19802T =CCTCC AA 208015T) as the type strain.

{dagger}These authors contributed equally to this work.

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain YIM 91119T is EU784646.

The polar lipid and cellular fatty acid compositions of strain YIM 91119T are available as supplementary material with the online version of this paper.






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