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Abstract

A Gram-stain-negative, motile, rod-shaped bacterial strain, designated UST20140214-052, was isolated from a marine flatworm (polyclad). The bacterium was found to be catalase-positive and weakly oxidase-positive, and motile by means of several peritrichous or subpolar flagella. Strain UST20140214-052 grew optimally at 28 °C, at pH 7.0 and in the presence of 3 % (w/v) NaCl. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain UST20140214-052 belongs to the genus , with highest sequence similarity to UST20140214-015B (98.8 %), followed by WSF2 (96.2 %), F423 (96.2 %), DN34 (95.9 %), Ad2 (95.9 %). All the other species shared < 95.5 % sequence similarity. The DNA–DNA hybridization estimate value between strain UST20140214-052 and UST20140214-015B was 24.7 ± 2.4 %. The major fatty acid was summed feature 8 (Cω7 and/or Cω6, as defined by the MIDI system; 62.6 %). The DNA G+C content was 47.0 mol%. The combined genotypic and phenotypic data show that strain UST20140214-052 represents a novel species within the genus , for which the name sp. nov. is proposed, with the type strain UST20140214-052 ( = KCTC 42384 = MCCC 1K00452).

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2016-05-01
2020-01-29
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