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Abstract

A Gram-stain negative, rod-shaped, facultatively aerobic, pale-beige-coloured bacterial strain, designated F7233, was isolated from coastal sediment sampled at Jingzi Bay, Weihai, PR China. Cells of strain F7233 were 0.3–0.4 µm wide, 1.2–1.4 µm wide long, non-spore-forming and motile with one flagellum. Optimum growth occurred at 30 °C, with 1.0 % (w/v) NaCl and at pH 6.5–7.0. Positive for nitrate reduction, hydrolysis of Tweens and oxidase activity. The sole respiratory quinone of strain F7233 was ubiquinone-10 and the predominant cellular fatty acid was summed feature 8 (C 7/C 6). The major polar lipids were diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol, phosphatidylcholine and one unidentified aminophospholipid. The G+C content of the chromosomal DNA was 63.3 mol%. Phylogenetic analysis of the 16S rRNA gene sequence revealed that the newly isolate belonged to the genus , with 96.8 % sequence similarity to MCCC 1A01226, 96.1 % similarity to JCM 20692 and 95.5% similarity to CC-SPIO-10-1. On the basis of phylogenetic, phenotypic and chemotaxonomic data, it is considered that strain F7233 should represent a novel species within the genus , for which the name sp. nov. is proposed. The type strain is F7233 (=MCCC 1H00419=KCTC 72859).

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2021-05-18
2022-01-24
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