A Gram-negative, rod-shaped, non-motile and pink bacterial strain, designated strain GCM0142T, was isolated from the confined seawater in the Saemangeum Tide Embankment of South Korea, and characterized using a polyphasic approach. 16S rRNA gene sequence analysis of strain GCM0142T indicated that the isolate belonged to the phylum Bacteroidetes and exhibited similarity levels of 94.0–96.4 % to the type strains of recognized Pontibacter species. Strain GCM0142T was oxidase- and catalase-positive. The major cellular fatty acids of the novel strain were summed feature 4 (comprising iso-C17 : 1I and/or anteiso-C17 : 1B, 36.8 %), iso-C15 : 0 (22.3 %) and summed feature 3 (comprising C16 : 1ω7c and/or C16 : 1ω6c, 6.2 %). The DNA G+C content of strain GCM0142T was 48.9 mol% and the major quinone was MK-7. The polar lipid profile consisted of phosphatidylethanolamine, two unknown aminolipids (AL1–2), an unknown aminophospholipid, five unknown lipids (L1–5) and an unknown glycolipid. On the basis of the evidence presented, strain GCM0142T is considered to represent a novel species of the genus Pontibacter, for which the name Pontibacter saemangeumensis sp. nov. is proposed. The type strain is GCM0142T ( = KACC 16448T = JCM 17926T).
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