1887

Abstract

A Gram-stain-negative, strictly aerobic, rod-shaped bacterium, without flagellum and designated ZYF765, was isolated from seawater sampled at a depth of 4000 m in the Mariana Trench. Strain ZYF765 grew with 1–15 % (w/v) NaCl (optimum, 4 %), at 16–37 °C (28 °C) and at pH 6.0–10.0 (pH 7.0–8.0). Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain ZYF765 formed a lineage within the family , and was distinct from the most closely related species , and with 16S rRNA gene sequences similarities ranging from 98.42 to 98.63 %. The major respiratory quinone was ubiquinone-10 (Q-10). The polar lipids comprised three unidentified glycolipids, one unidentified aminophospholipid, one unidentified phospholipid and one unidentified aminolipid. The predominant fatty acids (more than 10 % of total fatty acids) were C ω7 (46.2 %) and C (14.1 %). The DNA G+C content was 67.7 mol%. On the basis of the results of polyphasic taxonomic analysis, strain ZYF765 is considered to represent a novel species within the genus , for which the name sp. nov. is proposed. The type strain is ZYF765 (=JCM 33028=MCCC 1K03554).

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2019-11-01
2019-11-18
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