Name: Neomoorella thermoacetica (Fontaine et al. 1942) Gtari and Ventura 2025

Category: Species

Proposed as: comb. nov.

Basonym: Clostridium thermoaceticum Fontaine et al. 1942 (Approved Lists 1980)

Etymology: ther.mo.a.ce’ti.ca. Gr. masc. adj. thermos, hot; N.L. fem. adj. acetica, pertaining to vinegar; N.L. fem. adj. thermoacetica, producing acetic acid thermophilically

Pronunciation (Latin), gender: … t^her-mo-a-KE-ti-ka, feminine

Type strain: ATCC 35608; DSM 2955; DSM 521; JCM 9319

Conduct genome-based taxonomy at

16S rRNA gene: AB572912 Analyse FASTA

Valid publication: Gtari M, Ventura S. Proposal of Neomoorella gen. nov. as a replacement name for the illegitimate prokaryotic genus name Moorella Collins et al. 1994. Int J Syst Evol Microbiol 2025; 75:6779. 🇹🇳

IJSEM list: Oren A, Göker M. Notification list. Notification that new names and new combinations have appeared in volume 75, part 5 of the IJSEM. Int J Syst Evol Microbiol 2025; 75:6824.

Nomenclatural status: validly published under the ICNP

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

• Synonyms:

  • Name	Kind
    Moorella thermoautotrophica (Wiegel et al. 1982) Collins et al. 1994	heterotypic synonym, validly published under the ICNP, rejected name
    Moorella thermoacetica (Fontaine et al. 1942) Collins et al. 1994	homotypic synonym, validly published under the ICNP, illegitimate name
    Clostridium thermaceticum corrig. Fontaine et al. 1942 (Approved Lists 1980)	homotypic synonym, validly published under the ICNP, inappropriate correction
    Clostridium thermautotrophicum corrig. Wiegel et al. 1982	heterotypic synonym, validly published under the ICNP, rejected name
    Clostridium thermoaceticum Fontaine et al. 1942 (Approved Lists 1980)	homotypic synonym, validly published under the ICNP
    Clostridium thermoautotrophicum Wiegel et al. 1982	heterotypic synonym, inaccurate spelling and rejected

• Notes:
  • 🥇 Nomenclatural type of the genus Neomoorella Gtari and Ventura 2025. Publication: Gtari M, Ventura S. Proposal of Neomoorella gen. nov. as a replacement name for the illegitimate prokaryotic genus name Moorella Collins et al. 1994. Int J Syst Evol Microbiol 2025; 75:6779. 🇹🇳
  • ⏰ According to Redl et al. (2020), this species is an earlier heterotypic synonym of Clostridium thermautotrophicum corrig. Wiegel et al. 1982. Publication: Redl S, Poehlein A, Esser C, Bengelsdorf FR, et al. Genome-Based comparison of all species of the genus Moorella, and status of the species Moorella thermoacetica and Moorella thermoautotrophica. Front Microbiol 2020; 10:3070. 🇩🇪
  • ⏰ According to Redl et al. (2020), this species is an earlier heterotypic synonym of Moorella thermoautotrophica (Wiegel et al. 1982) Collins et al. 1994. Publication: Redl S, Poehlein A, Esser C, Bengelsdorf FR, et al. Genome-Based comparison of all species of the genus Moorella, and status of the species Moorella thermoacetica and Moorella thermoautotrophica. Front Microbiol 2020; 10:3070. 🇩🇪
  • ⏰ According to Redl et al. (2020), this species is an earlier heterotypic synonym of Clostridium thermoautotrophicum Wiegel et al. 1982. Publication: Redl S, Poehlein A, Esser C, Bengelsdorf FR, et al. Genome-Based comparison of all species of the genus Moorella, and status of the species Moorella thermoacetica and Moorella thermoautotrophica. Front Microbiol 2020; 10:3070. 🇩🇪
  • 🏢 Synonymy of this taxon was mentioned in an IJSEM list. Publication: Oren A, Garrity GM. List of changes in taxonomic opinion no. 32. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2020; 70:4061-4090.
  • 🎓 Name mentioned 0 times in PubMed until 2025-06-03.
  • 🙆 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as the name to be applied to this species. The name is on LoRN because of the recorded risk group of the genus.

Parent taxon: Neomoorella Gtari and Ventura 2025

Assigned by: Gtari M, Ventura S. Proposal of Neomoorella gen. nov. as a replacement name for the illegitimate prokaryotic genus name Moorella Collins et al. 1994. Int J Syst Evol Microbiol 2025; 75:6779. 🇹🇳

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Record number: 65477