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Int J Syst Evol Microbiol. 2017 Sep;67(9):3603-3609. doi: 10.1099/ijsem.0.002176. Epub 2017 Sep 6.

Lewinella maritima sp. nov., and Lewinella lacunae sp. nov., novel bacteria from marine environments.

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1​Department of Bioscience and Biotechnology, Hankuk University of Foreign Studies, Gyeonggi 17035, Republic of Korea.
2​Department of Biological Sciences, Inha University, Incheon 22212, Republic of Korea.


Two Gram-staining-negative, rod-shaped, aerobic, marine bacteria, designated HME9321T and HME9359T, were isolated from seawater and lagoon water samples in the Republic of Korea. Phylogenetic analysis of the 16S rRNA gene sequences of the two strains revealed that they belonged to the genus Lewinella within the family Saprospiraceae. The 16S rRNA gene sequence similarity of strain HME9321T showed highest similarities with Lewinella aquimaris HDW-36T (95.2 %), Lewinella marina MKG-38T (94.7 %) and Lewinella xylanilytica 13-9-B8T (94.0 %). Strain HME9359T had highest sequence similarities with Lewinella agarilytica SST-19T (94.7 %), Lewinella persica T-3T (94.1 %) and Lewinella antarctica IMCC3223T (93.3 %). The predominant fatty acids of strain HME9321T were summed feature 3 (comprising C16 : 1ω7c and/or C16 : 1ω6c), iso-C15 : 0 and summed feature 9 (comprising iso-C16 : 0 10-methyl and/or C17 : 1ω9c) while those of strain HME9359T were summed feature 3 (comprising C16 : 1ω7c and/or C16 : 1ω6c) and iso-C15 : 0. The major isoprenoid quinone of both strains was MK-7. Strain HME9321T contained the polar lipids, phosphatidylethanolamine, one unidentified aminolipid, one unidentified phospholipid and nine unidentified polar lipids, while strain HME9359T contained phosphatidylethanolamine, one unidentified phospholipid and nine unidentified polar lipids. The DNA G+C contents of strains HME9321T and HME9359T were 58.7 and 62.0 mol%, respectively. Based on the results of the phenotypic, genotypic, chemotaxonomic and phylogenetic investigation, two novel species, Lewinella maritima sp. nov. and Lewinella lacunae sp. nov. are proposed. The type strains are HME9321T (=KACC 17619T=CECT 8419T) and HME9359T (=KCTC 42187T=CECT 8679T), respectively.

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