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Abstract

A Gram-stain-negative, obligate aerobic, non-motile and rod-shaped bacterium, designated MME-070, was isolated from a tidal flat near Muui-do, Incheon, Republic of Korea. This bacterium belonged to the Roseobacter clade within the family Rhodobacteraceae . The isolate grew at 20–40 °C, pH 7.0–9.0 with 1–5 % (w/v) NaCl. Optimal growth required 2–3 % (w/v) NaCl at 25–30 °C and pH 8.0. The 16S rRNA gene sequence of strain MME-070 was most closely related to Roseovarius aestuarii SMK-122 (96.9 %). Phylogenetic analysis based on the 16S rRNA gene sequence indicated that strain MME-070 clustered with the genus Roseovarius . The sole respiratory quinone was Q-10. Polar lipids were phosphatidylglycerol, phosphatidylcholine, diphosphatidylglycerol, unidentified aminolipid and some unidentified lipids. Major cellular fatty acids were summed feature 8 (C18 : 1 ω7c and/or C18 : 1 ω6c), 11-methyl C18 : 1 ω7c and C16 : 0. The genomic DNA G+C content of the type strain was 63.6 mol%. Based on polyphasic taxonomic analysis, strain MME-070 is proposed to represent a novel species of the genus Roseovarius , for which the name Roseovarius faecimaris sp. nov. is proposed. The type strain is MME-070 (=KCCM 43142=JCM 30757).

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2019-03-14
2019-08-22
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