Title Bacillus piscis sp. nov., a novel bacterium isolated from the muscle of the antarctic fish Dissostichus mawsoni
Author Jae-Bong Lee1, Seon Hwa Jeon2, Seok-Gwan Choi1, Hee-Young Jung3,4, Myung Kyum Kim2*, and Sathiyaraj Srinivasan2*
Address 1Distant-water Fisheries Resources Division, National Institute of Fisheries Science, Busan 46083, Republic Korea, 2Department of Bio and Environmental Technology, College of Natural Science, Seoul Women’s University, Seoul 01797, Republic Korea, 3College of Agricultural and Life Sciences, Kyungpook National University, Daegu 41566 Republic Korea, 4Institute of Plant Medicine, Kyungpook National University, Daegu 41566, Republic Korea
Bibliography Journal of Microbiology, 54(12),809-813, 2016,
DOI 10.1007/s12275-016-6473-1
Key Words Antarctic Ocean, Bacillus, Dissostichus mawsoni, Antarctic toothfish, taxonomy
Abstract In this paper, a new bacterial strain designated as 16MFT21T is isolated from the muscle of a fish caught in the Antarctic Ocean. Strain 16MFT21T is a Gram-staining-positive, catalase- oxidase-positive, rod-shaped facultative-aerobic bacterium. The phylogenetic analysis that is based on the 16S-rRNA gene sequence of strain 16MFT21T revealed that it belongs to the genus Bacillus in the family Bacillaceae in the class Bacilli. The highest degrees of the sequence similarity of the strain 16MFT21T is with Bacillus licheniformis ATCC 14580T (96.6%) and Bacillus sonorensis NBRC 101234T (96.6%). The isolate formed a pale-yellow pigment, and it grew in the presence of 0% to 10% (w/v) NaCl (optimum at 2% NaCl), a pH of 6.0 to 10.0 (optimum pH􍾘from 7.0 to 8.0), and from 4°C to 30°C (optimum at 30°C). The major polar lipids consist of diphosphatidylglycerol (DPG) and phosphatidylglycerol (PG). The predominant fatty acids are iso-C15:0, anteiso-C15:0, iso-C17:0, and anteiso-C17:0. The main respiratory quinone is menaquinone- 7 (MK-7), and based on the use of the meso-diaminopimelic acid as the diagnostic diamino acid, the peptidoglycan cell-wall type is A1γ. Based on the phylogenetic, phenotypic, and chemotaxonomic data, strain 16MFT21T (=KCTC 18866T =JCM 31664T) for which the name Bacillus piscis sp. nov. is proposed should be classified as a new species.