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Volume 74, Issue 3

sp. nov., isolated from horse faeces No Access

Abstract

A Gram-stain-positive, non-spore-forming, and obligate anaerobic bacteria designated strain CBA3647 was isolated from a horse faecal sample in Jeju, Republic of Korea. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain CBA3647 formed a distinct phyletic lineage from closely related species within the genus . Based on comparative analysis of 16S rRNA gene sequences, ATCC 27337 is most closely related to strain CBA3647 with a 16S rRNA gene similarity of 98.31 %, while similarity to other type strains is below 98.0 %. The genomic DNA G+C content of strain CBA3647 was 30.0 mol%. The digital DNA–DNA hybridization values between strain CBA3647 and the six species were equal to or less than 24 %. Cells were non-motile and oval-shaped cocci with catalase-positive and oxidase-negative activities. Growth occurred at 20–40 °C (optimum, 35 °C), pH 6–8 (optimum, pH 7), and in the presence of 0–2 % (w/v) NaCl (optimum, 1 %). Strain CBA3647 contained C iso and C as major fatty acids. Phenotypic, chemotaxonomic, and molecular properties of strain CBA3647 suggest that it represents a novel species in the genus , which has been named sp. nov. The type strain is CBA3647 (=KACC 22891= JCM 35846).

  • Received:
  • Accepted:
  • Published Online:
Keyword(s): horse faeces , new taxon , Peptostreptococcus equinus and taxonomy
Funding
This study was supported by the:
  • National Research Foundation of Korea (Award 2021R1C1C1013859)
    • Principle Award Recipient: SeHee Lee
  • World Institute of Kimchi (Award KE2401-1-1)
    • Principle Award Recipient: TaeWoong Whon
© 2024 The Authors
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Peptostreptococcus equinus sp. nov., isolated from horse faeces
Int J Syst Evol Microbiol 74, 006295 (2024); https://doi.org/10.1099/ijsem.0.006295
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