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Abstract

A Gram-stain-negative, motile-by-gliding, aerobic, non-spore-forming, rod-shaped and yellow-pigmented bacterium was isolated from in the Yellow Sea and designated as strain MBLN091. It belonged to the family . The 16S rRNA gene sequence of this isolated strain was similar to that of IDSW-73 with 94.8 % similarity, and with 92.3–92.8 % similarities to those of other closely related species of the genus . The similarities of the RNA polymerase subunit B gene between this strain and KCTC 32466 and DSM 3653 were 80.5 and 80.2 %, respectively. Growth of strain MBLN091 was observed in the presence of 0.5‒15.0 % (w/v) NaCl at 4‒35 °C and pH 6.0–8.0, with optimal growth in the presence of 2.5‒5.0 % (w/v) NaCl at 20‒25 °C and pH 7.0. This isolate was able to hydrolyse gelatin. The only respiratory quinone was MK-6. The major polar lipids were phosphatidylethanolamine, an unidentified aminolipid and two unidentified lipids. Major fatty acids of the isolate were iso-C, summed feature 3 (C 7 and/or C 6), iso-C 3-OH and iso-C G. The genomic DNA G+C content was 39.6 mol%. The physiological features were closely related to . Therefore, strain MBLN091 is considered to represent a novel species within the genus , for which the name sp. nov. is proposed. The type strain is MBLN091 (=KCTC 52527=JCM 31731).

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2017-10-01
2021-08-01
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