1887

Abstract

An obligately anaerobic, Gram-stain-positive and spore-forming strain, SNUG30386 was isolated from a faecal sample of a healthy Korean subject. The strain formed a round ivory-coloured colony and cells were chained rods with tapered ends, approximately 2.0–2.5×0.6–0.8 μm in size. The taxonomic analysis indicated that strain SNUG30386 was within the family . According to the 16S rRNA gene sequence similarity, the closest species to strain SNUG30386 was (95.6 %), followed by (94.8 %), (94.8 %) and (94.6 %). The evolutionary tree based on 16S rRNA gene sequences demonstrated that strain SNUG30386 had split apart at a unique branch point far from other close relatives. Its DNA G+C content was 48.3 mol% calculated from the whole genome sequence. The major cellular fatty acids were C and C. Compared to those of the closely related species, strain SNUG30386 showed distinct biochemical activities such as being unable to utilize most of carbon sources except -glucose and -arabinose. As a result, based on its unique phylogenetic clade and taxonomic characteristics, we conclude that strain SNUG30386 represents a novel species within the genus , for which the name sp. nov. is proposed. The type strain of the novel species is SNUG30386 (=KCTC 15633= JCM 32258).

Funding
This study was supported by the:
  • National Research Foundation of Korea (Award 2012H1A2A1049234)
    • Principle Award Recipient: BoramSeo
  • National Research Foundation of Korea (Award 2018R1A2A1A05078258)
    • Principle Award Recipient: GwangPyoKo
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2020-11-30
2021-06-18
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