Name: Caldanaerobacter subterraneus subsp. yonseiensis (Kim et al. 2001) Fardeau et al. 2004

Category: Subspecies

Proposed as: comb. nov.

Basonym: Thermoanaerobacter yonseiensis Kim et al. 2001

Etymology: yon.sei.en’sis. N.L. masc. adj. yonseiensis, pertaining to Yonsei University, Seoul, Korea, in recognition of its support of research into extreme thermophiles and their thermostable enzymes

Pronunciation (Latin), gender: kald-an-a-e-ro-BAK-ter sub-ter-RA-ne-us yon-se͡i-EN-sis, masculine

Type strain: DSM 13777; KB-1; KFCC 11116

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AF212925 Analyse FASTA

Valid publication: Fardeau ML, Bonilla Salinas M, L'Haridon S, Jeanthon C, Verhe F, Cayol JL, Patel BK, Garcia JL, Ollivier B. Isolation from oil reservoirs of novel thermophilic anaerobes phylogenetically related to Thermoanaerobacter subterraneus: reassignment of T. subterraneus, Thermoanaerobacter yonseiensis, Thermoanaerobacter tengcongensis and Carboxydibrachium pacificum to Caldanaerobacter subterraneus gen. nov., sp. nov., comb. nov. as four novel subspecies. Int J Syst Evol Microbiol 2004; 54:467-474. 🇫🇷

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 54, part 2 of the IJSEM. Int J Syst Evol Microbiol 2004; 54:1007-1009.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Synonyms:

  • Name	Kind
    Thermoanaerobacter yonseiensis Kim et al. 2001	homotypic synonym, validly published under the ICNP, distinct rank

• Notes:
  • 😷 The risk group for Swiss Confederation has been imported on 2024-02-01. The full classification is: risk group = 1. — The risk group for Germany has been imported on 2026-08-13. The full classification is: risk group = 1. — If in doubt, use the risk group given in the regulations for your country and, if these are not available, use the risk group given in the catalogue of the culture collection from which you have obtained or intend to obtain the strain.
  • 🧍 May not be validly published. KFCC 11116 is a patent strain. Publication: Oren A, Arahal DR, Christensen H, Goker M, Manaia CM, Moore ERB. International Code of Nomenclature of Prokaryotes. Prokaryotic Code (2025 Revision). Int J Syst Evol Microbiol 2026; 76:6979. 🇮🇱

Parent taxon: Caldanaerobacter subterraneus (Fardeau et al. 2000) Fardeau et al. 2004

Assigned by: Fardeau ML, Bonilla Salinas M, L'Haridon S, Jeanthon C, Verhe F, Cayol JL, Patel BK, Garcia JL, Ollivier B. Isolation from oil reservoirs of novel thermophilic anaerobes phylogenetically related to Thermoanaerobacter subterraneus: reassignment of T. subterraneus, Thermoanaerobacter yonseiensis, Thermoanaerobacter tengcongensis and Carboxydibrachium pacificum to Caldanaerobacter subterraneus gen. nov., sp. nov., comb. nov. as four novel subspecies. Int J Syst Evol Microbiol 2004; 54:467-474. 🇫🇷

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Record number: 774337