Name: Thermoanaerobacter ethanolicus subsp. thermohydrosulfuricus (Klaushofer and Parkkinen 1965) Bing 2026

Category: Subspecies

Proposed as: comb. nov.

Basonym: Clostridium thermohydrosulfuricum Klaushofer and Parkkinen 1965 (Approved Lists 1980)

Etymology: ther.mo.hy.dro.sul.fu’ri.cus. Gr. masc. adj. thermos, hot; N.L. masc. adj. hydrosulfuricus, pertaining to hydrogen sulfide; N.L. masc. adj. thermohydrosulfuricus, indicating that the organism grows at high temperatures and reduces sulfite to H2S

Pronunciation (Latin), gender: … t^her-mo-hy-dro-sul-FU-ri-kus, masculine

Type strain: ATCC 35045; CECT 594; DSM 567; E100-69; LMG 6659; NCIB 10956; NCIMB 10956

16S rRNA gene: L09161 Analyse FASTA

Effective publication: Bing RG. Reclassifications within order Thermoanaerobacterales - dichotomization of genus Caldicellulosiruptor forming Anaerocellum gen. nov. within Caldicellulosiruptoraceae fam. nov., Caldicellulosiruptorales ord. nov.; proposal to unify 20 species, subspecies, and strains as subspecies within 7 species across the order. In: Bing RG (eds), Metabolic engineering and optimization of non-native solventogenic lignocellulose fermentation by the extreme thermophile Anaerocellum bescii, Ph.D. thesis., North Carolina State University, Raleigh, 2024, p. 155-189.

IJSEM list: Oren A, Göker M. Validation list no. 227. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2026; 76:6989.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name (and explicitly recommended for medical use)

• Synonyms:

  • Name	Kind
    Thermoanaerobacter thermohydrosulfuricus (Klaushofer and Parkkinen 1965) Lee et al. 1993	homotypic synonym, validly published under the ICNP, distinct rank
    Clostridium thermohydrosulfuricum Klaushofer and Parkkinen 1965 (Approved Lists 1980)	homotypic synonym, validly published under the ICNP, distinct rank

• Notes:
  • 🙆 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as the name to be applied to this subspecies. The name is on LoRN because of the recorded risk group of the genus.

Parent taxon: Thermoanaerobacter ethanolicus Wiegel and Ljungdahl 1982

Assigned by: Bing RG. Reclassifications within order Thermoanaerobacterales - dichotomization of genus Caldicellulosiruptor forming Anaerocellum gen. nov. within Caldicellulosiruptoraceae fam. nov., Caldicellulosiruptorales ord. nov.; proposal to unify 20 species, subspecies, and strains as subspecies within 7 species across the order. In: Bing RG (eds), Metabolic engineering and optimization of non-native solventogenic lignocellulose fermentation by the extreme thermophile Anaerocellum bescii, Ph.D. thesis., North Carolina State University, Raleigh, 2024, p. 155-189.

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Record number: 70447