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INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY logo International Journal of Systematic and Evolutionary Microbiology

Volume 75, Issue 1

sp. nov., isolated from human epidermis Open Access

Abstract

Five pink-pigmented bacterial strains, isolated from human skin and classified within the genus , were examined. Among them, four were identified as , while strain OT10 was deemed to be a potential novel species. Strain OT10 exhibited characteristics, such as Gram-stain-negative, oxidase positive, motile, strictly aerobic and rod shaped. The cells had multiple flagella at one end, arranged in a lophotrichous pattern. The predominant cellular fatty acids in OT10 were C ω7c/C ω6c and C 2OH; ubiquinone (Q)-10 was identified as the sole quinone. Major polar lipids included phosphatidylglycerol, phosphatidylethanolamine, diphosphatidylglycerol, phosphatidylcholine and two aminolipids. The G+C content of the genome was determined to be 72.6 mol%. Phylogenetic analysis based on 16S rRNA gene sequence similarities revealed that strain OT10 is closely related to subsp. ATCC 49956 (97.7%), subsp. ATCC BAA-691 (97.7%) and ATCC BAA-692 (97.5%). For the comparative genomic analyses, whole-genome sequencing was also conducted for strain OT10. Considering the chemotaxonomic, genotypic and phenotypic features, as well as the low average nucleotide identity and digital DNA–DNA hybridization values compared to its closest phylogenomic neighbours, OT10 is proposed to be a novel species named sp. nov., with OT10 designated as the type strain (=KCTC 92087 =JCM 34968).

  • Received:
  • Accepted:
  • Published Online:
Keyword(s): human skin flora , Roseomonas cutis and species novum
Funding
This study was supported by the:
  • National Institute of Health (Award 2023ER210800)
    • Principle Award Recipient: RobertJ. Mitchell
  • Korea Basic Science Institute (Award No. 2023R1A6C101B022)
    • Principle Award Recipient: KyoungLee
  • Changwon National University (Award 2023)
    • Principle Award Recipient: KyoungLee
  • National Research Foundation of Korea (Award No. 2016R1D1A1B01007775)
    • Principle Award Recipient: KyoungLee
© 2025 The Authors
  • This is an open-access article distributed under the terms of the Creative Commons Attribution License.
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2025-01-15
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Roseomonas cutis sp. nov., isolated from human epidermis
Int J Syst Evol Microbiol 75, 006617 (2025); https://doi.org/10.1099/ijsem.0.006617
/content/journal/ijsem/10.1099/ijsem.0.006617
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