1887

Abstract

A Gram-staining-negative, non-motile, catalase- and oxidase-positive, facultatively aerobic bacterium, designated IMCC1962 was isolated from a surface seawater sample from the Yellow Sea. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain IMCC1962 belonged to the genus , forming a robust clade with members of the genus, and was most closely related to (97.3  % similarity). DNA–DNA relatedness between strain IMCC1962 and DSM 19752 was 21.8–26.3  %, which indicated strain IMCC1962 represents a novel genomic species of the genus . The G+C content of the DNA of strain IMCC1962 was 48.7 mol%. The major isoprenoid quinone was ubiquinone Q-8 and major fatty acids were Cω7 and/or Cω6 (43.4  %), Cω7 and/or Cω6 (19.3  %) and C (17.2  %). The polar lipids found in strain IMCC1962 were phosphatidylethanolamine, phosphatidylglycerol, aminophospholipid, unknown phospholipid, and four unknown polar lipids. Strain IMCC1962 and DSM 19752 differed from each other in diverse phenotypic characteristics including motility, colony colour and enzyme activities. On the basis of phenotypic and genotypic data, strain IMCC1962 ( = KACC 17481 = NBRC 109703) represents a novel species of the genus for which the name sp. nov. is proposed. An emended description of the genus is also provided.

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2015-09-01
2021-10-20
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