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Abstract

A Gram-stain-negative, aerobic, motile, rod-shaped or ovoid bacterial strain, designated DB-2, was isolated from a tidal flat of the Yellow Sea in South Korea, and subjected to a taxonomic study using a polyphasic approach. Strain DB-2 grew optimally at 30 °C, at pH 7.0–8.0 and in the presence of 2.0–3.0 % (w/v) NaCl. Phylogenetic trees based on 16S rRNA gene sequences showed that strain DB-2 belonged to the genus . Strain DB-2 exhibited 16S rRNA gene sequence similarities of 97.17–97.36 % to the type strains of , and and of 93.79–96.99 % to the type strains of the other species of the genus . Strain DB-2 contained Q-8 as the predominant ubiquinone and C, Cω7, summed feature 3 (Cω7 and/or Cω6) and C 3-OH as the major fatty acids. The major polar lipids detected in strain DB-2 were phosphatidylglycerol, phosphatidylethanolamine, two unidentified glycolipids, an unidentified phospholipid and an unidentified aminolipid. The DNA G+C content of strain DB-2 was 54.9 ± 0.2 mol% and mean DNA–DNA relatedness values with the type strains of , and were 10–17 %. Differential phenotypic properties, together with phylogenetic and genetic distinctiveness, revealed that strain DB-2 is separated from recognized species of the genus . On the basis of these data, strain DB-2 is considered to represent a novel species of the genus , for which the name sp. nov. is proposed. The type strain is DB-2 ( = KCTC 42779 = CECT 8945).

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2016-05-01
2019-10-14
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