Name: Alkalithermobacter thermoalcaliphilus corrig. (Li et al. 1994) Bello et al. 2024

Category: Species

Proposed as: comb. nov.

Basonym: Clostridium thermoalcaliphilum Li et al. 1994

Etymology: ther.mo.al.ca.li’phi.lus. N.L. masc. adj. suff. -philus, loving; N.L. masc. adj. thermoalcaliphilus, referring to the organism's optimal growth under alkaline growth conditions at elevated temperatures

Pronunciation, gender: t^her-mo-al-ka-LI-p^hi-lus, masculine

Type strain: ATCC 51508; CIP 105528; DSM 7309; JW/YL23-2

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: L11304 Analyse FASTA

Valid publication: Bello S, McQuay S, Rudra B, Gupta RS. Robust demarcation of the family Peptostreptococcaceae and its main genera based on phylogenomic studies and taxon-specific molecular markers. Int J Syst Evol Microbiol 2024; 74:6247.

IJSEM list: Oren A, Göker M. Notification list. Notification that new names and new combinations have appeared in volume 74, part 2 of the IJSEM. Int J Syst Evol Microbiol 2024; 74:6301.

Nomenclatural status: validly published under the ICNP

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

• Synonyms:

  • Name	Kind
    Clostridium thermoalcaliphilum Li et al. 1994	homotypic synonym, validly published under the ICNP
    Alkalithermobacter thermoalcaliphilum (Li et al. 1994) Bello et al. 2024	other spelling of name, inaccurate spelling

• Notes:
  • 🙂 Spelling correction conducted by LPSN on 2024-02-16.
  • 🎓 Name mentioned 0 times in PubMed until 2025-06-04.
  • 🫡 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. This name is not taxonomically suspended any more in favour of Clostridium thermoalcaliphilum Li et al. 1994. Publication: Li Y, Engle M, Weiss N, Mandelco L, Wiegel J. Clostridium thermoalcaliphilum sp. nov., an anaerobic and thermotolerant facultative alkaliphile. Int J Syst Bacteriol 1994; 44:111-118. Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 44, part 1 of the IJSB. Int J Syst Bacteriol 1994; 44:372.

Parent taxon: Alkalithermobacter Bello et al. 2024

Assigned by: Bello S, McQuay S, Rudra B, Gupta RS. Robust demarcation of the family Peptostreptococcaceae and its main genera based on phylogenomic studies and taxon-specific molecular markers. Int J Syst Evol Microbiol 2024; 74:6247.

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Record number: 43428