Open AccessBacillus salacetis sp. nov., a slightly halophilic bacterium from Thai shrimp paste (Ka-pi)
Author(s) -
Rungsima Daroonpunt,
Supalurk Yiamsombut,
Jaruwan Sitdhipol,
Somboon Tanasupawat
Publication year - 2019
Publication title -
international journal of systematic and evolutionary microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.925
H-Index - 173
eISSN - 1466-5034
pISSN - 1466-5026
DOI - 10.1099/ijsem.0.003286
Subject(s) - biology , 16s ribosomal rna , peptidoglycan , halophile , strain (injury) , microbiology and biotechnology , diamino acid , bacteria , phosphatidylglycerol , bacillus (shape) , shrimp , thermophile , biochemistry , phospholipid , gene sequence , genetics , membrane , phosphatidylcholine , fishery , anatomy
A Gram-stain-positive, slightly halophilic, endospore-forming, strictly aerobic, rod-shaped bacterium, designated SKP7-4 T , was isolated from shrimp paste collected from Samut Sakhon province, Thailand. Strain SKP7-4 T grew at pH 6.0–9.0 (optimum, 7.5), at 20–40 °C (37 °C) and in 0–15 % (w/v) NaCl (1–3 %). The diamino acid found in the cell-wall peptidoglycan was meso -diaminopimelic acid. Menaquinone with seven isoprene units was the major isoprenoid quinone. Diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine and three unidentified phospholipids were detected as polar lipids. It contained iso-C 15 : 0 and anteiso-C 15 : 0 as major cellular fatty acids. On the basis of 16S rRNA gene sequence analysis, strain SKP7-4 T belonged to the genus Bacillus and was closely related to Bacillus vietnamensis JCM 11124 T , Bacillus marisflavi JCM 11544 T , Bacillus aquimaris JCM 11545 T and B acillus oryzaecorticis JCM 19602 T , with 98.7, 97.9, 97.8 and 97.8 % similarity, respectively. The draft genome of SKP7-4 T was 4.68 Mb with 5208 coding sequences with an average G+C content of 43.2 mol%. The ANIb and ANIm values of strain SKP7-4 T were 70.0 and 84.3 %, respectively, and the digital DNA–DNA hybridization value was 20 % in comparison with the draft genome of B. vietnamensis JCM 11124 T . On the basis of the results of phenotypic, chemotaxonomic and phylogenetic analyses, the strain should represent a novel species of the genus Bacillus and the name Bacillus salacetis sp. nov. is proposed. The type strain is SKP7-4 T (=JCM 33205 T =KCTC 43014 T =TISTR 2596 T ).