1887

Abstract

A Gram-stain-negative, aerobic, non-motile, rod-shaped (0.2–0.3×0.8–1.4 µm) and yellow-pigmented bacterium, designated K5023, was isolated from marine sediment obtained off the coast of Weihai, China. Strain K5023 was found to grow at 16–37 °C (optimum, 33 °C), at pH 6.5–8.0 (optimum, 7.0–7.5) and in the presence of 1–10 % (w/v) NaCl (optimum, 5 %). Cells were oxidase-positive and catalase-negative. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain K5023 is a member of the genus Salegentibacter and exhibited the hightest sequence similarity to Salegentibacter flavus DSM 22702 (97.0 %). Menaquinone-6 (MK-6) was detected as the major respiratory quinone. The dominant cellular fatty acids were iso-C15 : 0 and anteiso-C15 : 0. The DNA G+C content of strain K5023 was 40.1 mol%. The polar lipids included one phosphatidylethanolamine, three phospholipids and four unidentified lipids. Based on the phylogenetic and phenotypic characteristics, strain K5023 is considered to represent a novel species of the genus Salegentibacter , for which the name Salegentibacter sediminis sp. nov. is proposed. The type strain is K5023 (=KCTC 52477=MCCC 1H00173).

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2018-06-01
2019-10-19
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