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- Salicibibacter cibarius sp. nov. and Salicibibacter cibi sp. nov., two novel species of the family Bacillaceae isolated from kimchi
- Young Joon Oh , Joon Yong Kim , Seul Ki Lim , Min-Sung Kwon , Hak-Jong Choi
- J. Microbiol. 2021;59(5):460-466. Published online April 28, 2021
- DOI: https://doi.org/10.1007/s12275-021-0513-1
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Abstract
- To date, all species in the genus Salicibibacter have been isolated in Korean commercial kimchi. We aimed to describe the taxonomic characteristics of two strains, NKC5-3T and NKC21-4T, isolated from commercial kimchi collected from various regions in the Republic of Korea. Cells of these strains were rod-shaped, Gram-positive, aerobic, oxidase- and catalase- positive, non-motile, halophilic, and alkalitolerant. Both strains, unlike other species of the genus Salicibibacter, could not grow without NaCl. Strains NKC5-3T and NKC21-4T could tolerate up to 25.0% (w/v) NaCl (optimum 10%) and grow at pH 7.0–10.0 (optimum 8.5) and 8.0–9.0 (optimum 8.5), respectively; they showed 97.1% 16S rRNA gene sequence similarity to each other and were most closely related to S. kimchii NKC1-1T (97.0% and 96.8% similarity, respectively). The genome of strain NKC5-3T was nearly 4.6 Mb in size, with 4,456 protein-coding sequences (CDSs), whereas NKC21-4T genome was nearly 3.9 Mb in size, with 3,717 CDSs. OrthoANI values between the novel strains and S. kimchii NKC1-1T were far lower than the species demarcation threshold. NKC5-3T and NKC21-4T clustered together to form branches that were distinct from the other Salicibibacter species. The major fatty acids in these strains were anteiso-C15:0 and anteiso-C17:0, and the predominant menaquinone was menaquinone-7. The polar lipids of NKC5-3T included diphosphatidylglycerol (DPG), phosphatidylglycerol (PG), and five unidentified phospholipids (PL), and those of NKC21-4T included DPG, PG, seven unidentified PLs, and an unidentified lipid. Both isolates had DPG, which is the first case in the genus Salicibibacter. The genomic G + C content of strains NKC5-3T and NKC21-4T was 44.7 and 44.9 mol%, respectively. Based on phenotypic, genomic, phylogenetic, and chemotaxonomic analyses, strains NKC5-3T (= KACC 22040T = DSM 111417T) and NKC21-4T (= KACC 22041T = DSM 111418T) represent two novel species of the genus Salicibibacter, for which the names Salicibibacter cibarius sp. nov. and Salicibibacter cibi sp. nov. are proposed.
- NOTE] Arenimonas aquaticum sp. nov., a Member of the Gammaproteobacterium, Isolated from a Freshwater Reservoir
- A-Ram Kim , Siwon Lee , Kyudong Han , Tae-Young Ahn
- J. Microbiol. 2012;50(2):354-358. Published online April 27, 2012
- DOI: https://doi.org/10.1007/s12275-012-1301-8
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Abstract
- A novel bacterial strain, designated NA-09T, was isolated from a freshwater sample collected from the Cheonho reservoir, Republic of Korea. Colonies were creamy-white pigmented, translucent, and circular with convex shape. The isolate was Gram-staining negative, strictly aerobic, motile, and rod-shaped. The 16S rRNA gene sequence analysis revealed that strain NA-09T belonged to the genus Arenimonas and showed the highest sequence similarities with Arenimonas malthae CC-JY-1T (95.4%), A. oryziterrae YC6267T (94.9%), A. composti P2-12-1T (94.8%), and A. donghaensis H03-R19T (94.1%). The major fatty acids were iso-C16:0 (20.8%), iso-C15:0 (16.9%), summed feature 1 (13.2%), and iso-C16:1ω7c alcohol (10.2%). The major isoprenoid quinone of the isolate was ubiquionone-8. On the basis of the data from the polyphasic characterization, the strain NA-09T represents a novel species, for which the name Arenimonas aquaticum sp. nov. is proposed (type strain NA-09T =KACC 14663T =NBRC 106550T).
- Oceanicoccus sagamiensis gen. nov., sp. nov., a Gammaproteobacterium Isolated from Sea Water of Sagami Bay in Japan
- Sanghwa Park , Kazuhiro Kogure , Akira Yokota
- J. Microbiol. 2011;49(2):233-237. Published online May 3, 2011
- DOI: https://doi.org/10.1007/s12275-011-0368-y
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- 4 Citations
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Abstract
- A gram-negative, motile, coccoid- and amorphous-shaped, non-pigmented chemoheterotrophic bacterium, designated strain PZ-5T, was isolated from sea water of Sagami Bay in Japan and subjected to a polyphasic taxonomic study. Phylogenetic analysis based on 16S rRNA gene sequences revealed that the novel isolate could be affiliated with the class Gammaproteobacteria. Strain PZ-5T showed below 93.9% similarity with validly published bacteria and demonstrated the highest sequence similarity to Dasania marina KOPRI 20902T (93.9%). Strain PZ-5T formed a monophyletic group with D. marina KOPRI 20902T. The DNA G+C content of strain PZ-5T was 49.8 mol%. The major isoprenoid quinone was Q-8 and redominant cellular fatty acids were C15:0 ISO 2OH (19%), C16:1 ω7c (17.4%), C17:1 ω8c (16.2%), C11:0 3OH (7.5%), and C15:1 ω8c (6.5%). Based on evidence from a polyphasic taxonomical study, it was concluded that the strain should be classified as representing a new genus and species of the class Gammaproteobacteria, for which the name Oceanicoccus sagamiensis gen. nov., sp. nov., (type strain PZ-5T =NBRC 107125T =KCTC 23278T) is proposed.
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