Name: Thermoanaerobacter mathranii Larsen et al. 1998

Category: Species

Proposed as: sp. nov.

Etymology: ma.thra’ni.i. N.L. gen. masc. n. mathranii, of Mathrani, in honor of the late Indra M. Mathrani, who contributed to the understanding of thermophilic anaerobes from hot springs during his short career

Pronunciation, gender: ma-T^HRA-ni-i, masculine

Type strain: AIP 130; AIP 130.05; CIP 108742; DSM 11426; Strain A3

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: Y11279 Analyse FASTA

Effective publication: Larsen L, Nielsen P, Ahring BK. Thermoanaerobacter mathranii sp. nov., an ethanol-producing, extremely thermophilic anaerobic bacterium from a hot spring in Iceland. Arch Microbiol 1997; 168:114-119. 🇩🇰

IJSEM list: Anonymous. Validation list no. 64. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1998; 48:327-328.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Synonyms:

  • Name	Kind
    "Thermoanaerobacter thermocopriae subsp. mathranii" (Larsen et al. 1998) Bing 2024	homotypic synonym, not validly published, distinct rank

• Emendations:
  • Carlier et al. 2006 Carlier JP, Bonne I, Bedora-Faure M. Isolation from canned foods of a novel Thermoanaerobacter species phylogenetically related to Thermoanaerobacter mathranii (Larsen 1997): emendation of the species description and proposal of Thermoanaerobacter mathranii subsp. Alimentarius subsp. Nov. Anaerobe 2006; 12:153-159. 🇫🇷 Euzeby JP. List of changes in taxonomic opinion no. 5. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2007; 57:4-5.
    Notes:
    • 🧍 In the protologue of the effective publication, the description of Thermoanaerobacter mathranii is erroneously attributed to Larsen 1997 (in place of Larsen et al. 1997). — 🧍 In the title of the effective publication, Thermoanaerobacter mathranii Larsen et al. 1998 is erroneously cited as Thermoanaerobacter mathranii Larsen et al. (1997).

• Notes:
  • 📧 The e-mail address of the corresponding author given in the effective publication is not functional any more.
  • 🧬 The phylogenomic assignment score of this taxon is 0.08184 (N = 10).
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No". — 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 2023-10-29. 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.
  • 🎓 Name mentioned 23 times in PubMed until 2025-06-04.

Subdivision:

Number of child taxa with a validly published and correct name: 2
Number of child taxa with a validly published name, including synonyms: 2
Total number of child taxa: 2

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Thermoanaerobacter mathranii subsp. alimentarius Carlier et al. 2007	validly published under the ICNP	correct name
    Thermoanaerobacter mathranii subsp. mathranii (Larsen et al. 1998) Carlier et al. 2007	validly published under the ICNP	correct name

Parent taxon: Thermoanaerobacter Wiegel and Ljungdahl 1982

Assigned by: Larsen L, Nielsen P, Ahring BK. Thermoanaerobacter mathranii sp. nov., an ethanol-producing, extremely thermophilic anaerobic bacterium from a hot spring in Iceland. Arch Microbiol 1997; 168:114-119. 🇩🇰

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Record number: 782508