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A Gram-stain-negative and strictly aerobic bacterium, designated DMHB-2T, was isolated from a sample of seawater collected off the Yellow Sea coast of the Republic of Korea. Cells were short rods and motile by means of a single polar flagellum. Catalase and oxidase activities were positive. Growth occurred at pH 5.5–10.0 (optimum, pH 6.0), 15–45 °C (optimum, 25 °C) and with 1–9 % NaCl (optimum, 3 %). The respiratory quinone was ubiquinone-8 and the major fatty acids were C16 : 0 (17.9 %), summed feature 3 (C16 : 1 ω7c and/or C16 : 1 ω6c; 26.1 %) and summed feature 8 (C18 : 1 ω7c and/or C18 : 1 ω6c; 37.4 %). Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain DMHB-2T belong to the genus Marinobacterium , with the highest 16S rRNA gene sequence similarity of 95.2 % to Marinobacterium zhoushanense KCTC 42782T. The genomic DNA G+C content of strain DMHB-2T was 60.8 mol%. On the basis of the phenotypic, chemotaxonomic and genotypic characteristics presented in this study, strain DMHB-2T is suggested to represent a novel species of the genus Marinobacterium , for which the name Marinobacterium boryeongense sp. nov. is proposed. The type strain is DMHB-2T (=KACC 19225T=JCM 31902T).

A Gram-stain-negative, non-motile and facultative anaerobic bacterium, designated CAM-8T, was isolated from an artificial fountain at Chonbuk National University, South Korea. The novel strain grew at 20–37 °C (optimum 25 °C), pH 5.5–7.0 (optimum 6.0) and with 0–2 % NaCl (optimum 0 %). Oxidase and catalase activities were positive. The cell morphology of strain CAM-8T was atypical rods 0.6–0.8 µm in width and 4.5–6.5 µm in length, with a peaked tip and sometimes a bulb shape. CAM-8T existed as single cells, and as pairs or chains of cells. The phylogenetic analysis of 16S rRNA gene sequences indicated that strain CAM-8T clustered with Gemmobacter nectariphilus JCM 11959T and Gemmobacter megaterium JCM 18498T within the genus Gemmobacter . The DNA G+C content of strain CAM-8T was 65.9 mol%. The respiratory quinone was ubiquinone Q-10. The major fatty acids were C18 : 1 ω7c and/or C18 : 1 ω6c. The polar lipids of strain CAM-8T consisted of phosphatidylethanolamine, phosphatidylglycerol, phosphatidylcholine, two uncharacterized phospholipids, an uncharacterized aminolipid, an uncharacterized glycolipid, an uncharacterized aminophospholipid and four uncharacterized lipids. On the basis of phenotypic, phylogenetic and chemotaxonomic data, strain CAM-8T (=KACC 19224T=JCM 31905T) is considered to represent a novel species of the genus Gemmobacter , for which the name Gemmobacter straminiformis sp. nov. is proposed.