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Int J Syst Evol Microbiol. 2017 Jul;67(7):2337-2342. doi: 10.1099/ijsem.0.001953. Epub 2017 Jul 12.

Flaviramulus aestuariivivens sp. nov., isolated from a tidal flat.

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Department of Food Science and Biotechnology, Sungkyunkwan University, Jangan-gu, Suwon, Republic of Korea.


A Gram-stain-negative, non-flagellated, non-gliding, aerobic and ovoid or rod-shaped bacterium, designated OITF-51T, was isolated from a tidal flat in Oido, an island of South Korea, and subjected to a polyphasic taxonomic study. Strain OITF-51T grew optimally at 30 °C, at pH 7.0-8.0 and in the presence of 2.0 % (w/v) NaCl. The neighbour-joining phylogenetic tree based on 16S rRNA gene sequences revealed that strain OITF-51T forms a cluster with the type strains of three species of the genus Flaviramulus. Strain OITF-51T exhibited 16S rRNA gene sequence similarity values of 97.0, 95.8 and 95.8 % to the type strains of Flaviramulus ichthyoenteri, Flaviramulus basaltis and Flaviramulus aquimarinus, respectively, and of less than 96.5 % to the type strains of other recognized species. Strain OITF-51T contained MK-6 as the predominant menaquinone and iso-C15 : 1 G, iso-C15 : 0, iso-C15 : 0 3-OH and iso-C17 : 0 3-OH as the major fatty acids. The major polar lipids detected in strain OITF-51T were phosphatidylethanolamine and one unidentified lipid. The DNA G+C content of strain OITF-51T was 33.4 mol%, and its mean DNA-DNA relatedness value with the type strain of F. ichthyoenteri was 13 %. Differential phenotypic properties, together with its phylogenetic and genetic distinctiveness, revealed that strain OITF-51T is separated from recognized species of the genus Flaviramulus. On the basis of the data presented, strain OITF-51T is considered to represent a novel species of the genus Flaviramulus, for which the name Flaviramulus aestuariivivens sp. nov. is proposed. The type strain is OITF-51T (=KCTC 52657T=NBRC 112707T).

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