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Abstract

A Gram-stain-negative, obligately aerobic bacterium, designated as HS1C4-1, was isolated from a sediment sample from the tidal zone of the Haicang Coast, Xiamen, Fujian Province, PR China. The strain was yellowish-coloured, non-gliding, rod-shaped and motile, with a single polar flagellum. Cells of HS1C4-1 were oxidase- and catalase-positive. The strain could grow at 15–55 °C (optimum 37 °C), pH 6.0–10.0 (optimum, pH 7.0–9.0), in the presence of 0–12 % (optimum, 1 %) NaCl (w/v). Phylogenetic analysis based on the 16S rRNA gene sequences indicated that HS1C4-1 represented a member of the genus , and shared the highest similarity to CGMCC 1.10267 (97.6 %). Digital DNA–DNA hybridization values and average nucleotide identity between HS1C4-1 and all the species of genus were 18.7–20.2 % and 77.3–78.4 %, respectively. The principal fatty acids (>10 %) were C cyclo ω8 (50.5 %) and summed feature 8 (Cω7 and/or Cω6; 29.1%). Q-10 was the sole respiratory quinone. The polar lipids included diphosphatidylglycerol, phosphatidylglycerol, two unidentified glycolipids and six unidentified lipids. The G+C content of the chromosomal DNA was 62.9 %. On the basis of phylogenetic, phenotypic, chemotaxonomic and genomic characteristics, HS1C4-1 represents a novel species within the genus , for which the name sp. nov. is proposed. The type strain is HS1C4-1 (=MCCC 1A18759=KCTC 92097).

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2022-08-04
2024-12-13
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