期刊
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
卷 60, 期 -, 页码 2364-2370出版社
SOC GENERAL MICROBIOLOGY
DOI: 10.1099/ijs.0.018879-0
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- Faculty of Pharmaceutical Sciences, Chulalongkorn University
- Thailand Graduate Institute of Science and Technology (TGIST)
- National Science and Technology Development Agency (NSTDA)
- Graduate School, Chulalongkorn University
A Gram-positive, endospore-forming, rod-shaped bacterium, strain PD-A10(T), was isolated from salted crab (poo-khem) in Thailand and subjected to a taxonomic study. Phenotypic and chemotaxonomic characteristics, including phylogenetic analyses, showed that the novel strain was a member of the genus Bacillus. The novel strain grew in medium with 0-14% (w/v) NaCl, at 4-55 degrees C and at pH 4.5-9. The predominant quinone was a menaquinone with seven isoprene units (MK-7). The major fatty acids were anteiso-C-15:0 and anteiso-C-17:0. Polar lipid analysis revealed the presence of diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, lysylphosphatidylglycerol, glycolipid and unknown lipids. The DNA G+C content was 41.4 mol% The 16S rRNA gene sequence similarities between strain PD-A10(T) and Bacillus amyloliquefaciens NBRC 15535(T), Bacillus subtilis DSM 10(T), Bacillus vallismortis DSM 11031(T) and Bacillus mojavensis IFO 15718(T) were 99.5, 99.4, 99.4 and 99.2%, respectively. Strain PDA10(T) showed a low degree similarity of rep-PCR fingerprints and low DNA-DNA relatedness with the above-mentioned species. On the basis of the data gathered in this study, strain PD-A10(T) should be classified as representing a novel species of the genus Bacillus, for which the name Bacillus siamensis sp. nov. is proposed. The type strain is PD-A10(T) (=BCC 22614(T)=KCTC 13613(T)).
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