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Abstract

A Gram-stain-negative, aerobic, non-motile and coccoid-, ovoid- or rod-shaped bacterial strain, designated SSKS-13, was isolated from sediment sampled at the junction between the ocean and a freshwater spring at Jeju island, Republic of Korea. Strain SSKS-13 grew optimally at 37 °C and in the presence of 2.0 % (w/v) NaCl. A neighbour-joining phylogenetic tree of 16S rRNA gene sequences showed that strain SSKS-13 fell within the clade comprising the type strains of species, clustering with the type strains of , and having 16S rRNA gene sequence similarities of 97.2–97.6 %. Strain SSKS-13 exhibited 16S rRNA gene sequence similarities of less than 97.0 % to the type strains of the other recognized species. Strain SSKS-13 contained Q-10 as the predominant ubiquinone and C 7 as the major fatty acid. The major polar lipids detected in strain SSKS-13 were phosphatidylethanolamine, phosphatidylglycerol and sphingoglycolipid. The DNA G+C content of strain SSKS-13 was 64.6 mol%. The mean DNA–DNA relatedness values of strain SSKS-13 with the type strains of , and were 11.7–25.3 %. Differential phenotypic properties, together with the phylogenetic and genetic data, proved that strain SSKS-13 is distinct from recognized species. On the basis of the data presented here, strain SSKS-13 is considered to represent a novel species of the genus , for which the name sp. nov. is proposed. The type strain is SSKS-13 (=KACC 19863=KCTC 62900=NBRC 113545).

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2019-08-01
2019-09-22
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