1887

Abstract

A Gram-reaction-negative bacterial strain, designated GH1-19, was isolated from a tidal mudflat sample collected in Gangwha Island, Republic of Korea. Cells of the novel micro-organism were strictly aerobic, non-sporulating, motile and rod-shaped. Growth occurred at 10–40 °C (optimum, 30 °C), pH 6–9 (pH 8) and in the presence of 1–9 % NaCl (3 %). Comparative analysis of complete or nearly complete 16S rRNA gene sequences exhibited that strain GH1-19 formed a distinct cluster between CAU 1311 (97.42 % sequence similarity) and L1 8-17 (97.35 %). Similarity levels of 16S rRNA gene sequences between the novel strain and other members of the family were below 96.6 %. The isoprenoid quinone was Q-10. The major fatty acids were Cωc, C, summed feature 3 (C 7 and/or C 6) and C 3-OH. The polar lipids consisted of diphosphatidylglycerol, phosphatidylcholine, phosphatidylethanolamine, phosphatidylglycerol, an unidentified aminolipid, an unidentified phospholipid and an unidentified lipid. The G+C content of the DNA was 63.2 mol% (draft genome). DNA–DNA relatedness value between the novel strain and the type strain of was 12.7±9.0 %. On the basis of data from phenotypic, chemotaxonomic and DNA–DNA hybridization studies together with phylogenetic analyses, strain GH1-19 (=KCTC 62376=DSM 106292) represents a novel species of the genus , for which the name sp. nov. is proposed, with the emended description of the genus .

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2019-10-22
2019-11-20
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