Abstract
A Gram-positive, alkaliphilic bacterium, designated strain Zby6T, was isolated from Zhabuye Lake in Tibet, China. The strain was able to grow at pH 8.0–11.0 (optimum at pH 10.0), in 0–8 % (w/v) NaCl (optimum at 3 %, w/v) and at 10–45 °C (optimum at 37 °C). Cells of the isolate were facultatively anaerobic and spore-forming rods with polar flagellum. The predominant isoprenoid quinone was MK-7, and its cell wall peptidoglycan contained meso-diaminopimelic acid. The major cellular fatty acids were iso-C15:0, C16:0 and anteiso-C15:0. The major polar lipids consisted of phosphatidylglycerol, diphosphatidylglycerol, and phosphatidylethanolamine. The genomic DNA G+C content of the isolate was 38.9 mol%. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain Zby6T was a member of the genus Bacillus and most closely related to Bacillus cellulosilyticus DSM 2522T (97.7 % similarity). The DNA–DNA relatedness value between strain Zby6T and B. cellulosilyticus DSM 2522T was 59.2 ± 1.8 %. Comparative analysis of genotypic and phenotypic features indicated that strain Zby6T represents a novel species of the genus Bacillus, for which the name Bacillus alkalicola sp. nov. is proposed; the type strain is Zby6T (=CGMCC 1.10368T = JCM 17098T = NBRC 107743T).
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Acknowledgments
This work was supported by the Grants from the Chinese Academy of Sciences (Knowledge Innovation Program, KSCX2-EW-G-3) and the Ministry of Science and Technology of China (2013CB733900 and 2012AA022100).
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The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain Zby6 T is GU583650.
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Zhai, L., Ma, Y., Xue, Y. et al. Bacillus alkalicola sp. nov., An Alkaliphilic, Gram-Positive Bacterium Isolated from Zhabuye Lake in Tibet, China. Curr Microbiol 69, 311–316 (2014). https://doi.org/10.1007/s00284-014-0576-x
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DOI: https://doi.org/10.1007/s00284-014-0576-x