1887

Abstract

A Gram-stain-negative, coccoid to oval-shaped and non-motile bacterial strain, designated MM-7, was isolated from seawater of the Yellow Sea, South Korea, and was subjected to a polyphasic taxonomic study. Strain MM-7 grew optimally at pH 7.0–8.0, at 25 °C and in the presence of 2–3 % (w/v) NaCl. A neighbour-joining phylogenetic tree based on 16S rRNA gene sequences showed that strain MM-7 joins the branch comprising the species of the genus , clustering with the type strains of and , with which it exhibited 97.9 and 96.8 % sequence similarity values, respectively. The DNA G+C content of strain MM-7 was determined to be 60.8 mol%, and its mean DNA–DNA relatedness values with JCM 21268 was 10.3±0.4 %. Strain MM-7 contained Q-10 as the predominant ubiquinone and summed feature 8 (Cω7 and/or Cω6) as the major fatty acid. The major polar lipids were diphosphatidylglycerol, phosphatidylcholine, phosphatidylglycerol, an unidentified aminolipid and an unidentified lipid. Differential phenotypic properties, together with the phylogenetic distinctiveness, demonstrated that strain MM-7 is distinguishable from other species of the genus . On the basis of the data presented, strain MM-7 is considered to represent a novel species of the genus , for which the name sp. nov. is proposed. The type strain is MM-7 (=KCTC 52469=NBRC 112431).

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2017-07-01
2024-03-28
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