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Int J Syst Evol Microbiol 59 (2009), 1460-1464; DOI  10.1099/ijs.0.000653-0
© 2009 International Union of Microbiological Societies

Bacillus solisalsi sp. nov., a halotolerant, alkaliphilic bacterium isolated from soil around a salt lake

Huan Liu1,2,{dagger}, Yu Zhou3,4,{dagger}, Rui Liu3, Ke-Yun Zhang3 and Ren Lai1,3

1 Biotoxin Units of Key Laboratory of Animal Models and Human Disease Mechanisms, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, Yunnan, PR China
2 Graduate School of the Chinese Academy of Sciences, Beijing 100009, PR China
3 Key Laboratory of Microbiological Engineering of Agricultural Environment, Ministry of Agriculture, Life Sciences College of Nanjing Agricultural University, Nanjing, Jiangsu, 210095, PR China
4 Institute of Quality and Standard for Agricultural Products, Zhejiang Academy of Agricultural Sciences, Hangzhou, Zhejiang 310021, PR China

Correspondence
Ren Lai
rlai72{at}njau.edu.cn

A novel Gram-positive, motile, rod-shaped bacterium isolated from a saline soil in China was characterized by a polyphasic taxonomic approach. The strain, designated YC1T, was halotolerant [tolerating up to 15 % (w/v) NaCl] and alkaliphilic (growing at a broad pH range of 5–13). 16S rRNA gene sequence analysis revealed that the isolate belonged to the genus Bacillus, showing highest similarity to Bacillus macauensis JCM 13285T (98.0 %). However, DNA–DNA hybridization indicated low levels of genomic relatedness with B. macauensis JCM 13285T (8.5 %). The major isoprenoid quinone was MK-7 and the cellular fatty acid profile consisted of significant amounts of iso-C15 : 0 (38.6 %) and anteiso-C15 : 0 (35.9 %). The predominant polar lipids were diphosphatidylglycerol, phosphatidylglycerol and phosphatidylethanolamine. The G+C content of the genomic DNA was 41.8 mol%. On the basis of the polyphasic evidence from this study, strain YC1T (=KCTC 13181T=CGMCC 1.6854T) should be classified as the type strain of a novel species of the genus Bacillus, for which the name Bacillus solisalsi sp. nov. is proposed.

Abbreviations: AL, aminolipid; APL, aminophospholipid; DPG, diphosphatidylglycerol; PE, phosphatidylethanolamine; PG, phosphatidylglycerol

{dagger}These authors contributed equally to this work.

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain YC1T is EU046268.

The TLC analysis of the polar lipid composition of the novel strain and B. macauensis and a transmission electron micrograph of cells of strain YC1T are available as supplementary figures with the online version of this paper.






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