1887

Abstract

A Gram-stain-negative, aerobic, oxidase- and catalase-positive, non-flagellated, non-gliding, yellow-pigmented, and rod-shaped bacterium with appendages, designated strain SM1704, was isolated from surface seawater collected from the South China Sea. The strain grew at 15–42 °C and with 1–10 % NaCl. It hydrolysed aesculin, but did not hydrolyse gelatin and Tween 80 nor reduce nitrate to nitrite. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain SM1704 was affiliated with the genus Muricauda , sharing 94.1–95.9 % sequence similarities with type strains of recognized Muricauda species. The major fatty acids were iso-C15 : 0, iso-C15 : 1 G and iso-C17 : 0 3-OH and the main polar lipids were phosphatidylethanolamine, three unidentified lipids and three unidentified aminolipids. The major respiratory quinone was menaquinone-6. The genomic DNA G+C content of strain SM1704 was 40.7 mol%. On the basis of results from polyphasic analysis of strain SM1704, it is considered to represent a novel species within the genus Muricauda , for which the name Muricauda nanhaiensis sp. nov. is proposed. The type strain is SM1704 (=KCTC 62797=MCCC 1K03557).

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2019-05-15
2019-08-19
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