Species Thermoanaerobacter mathranii

Name: Thermoanaerobacter mathranii Larsen et al. 1998

Category, proposed as: species, 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 (Latin), gender: t^her-mo-an-a-e-ro-BAK-ter 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: synonym

Correct name: Thermoanaerobacter thermocopriae (Jin et al. 1988) Collins et al. 1994

Risk group: 1

• Synonyms:

  • Name	Kind
    "Thermoanaerobacter thermocopriae subsp. italicus" (Kozianowski et al. 1998) Bing 2024	heterotypic synonym, not validly published, distinct rank
    Clostridium thermocopriae Jin et al. 1988	heterotypic synonym, validly published under the ICNP
    Thermoanaerobacter thermocopriae (Jin et al. 1988) Collins et al. 1994	heterotypic synonym, validly published under the ICNP
    Thermoanaerobacter pentosaceus Tomás et al. 2013	heterotypic synonym, validly published under the ICNP
    "Thermoanaerobacter thermocopriae subsp. mathranii" (Larsen et al. 1998) Bing 2024	homotypic synonym, not validly published, distinct rank
    Thermoanaerobacter italicus Kozianowski et al. 1998	heterotypic synonym, validly published under the ICNP

• 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:
  • ⏲ According to Bouras et al. (2026), this species is a later heterotypic synonym of Clostridium thermocopriae Jin et al. 1988. Publication: Bouras N, Dif G, Belghit S, Nguyen SV, Jacobs JL, Toumatia O, Ebada SS, Nouioui I. Genome-based reclassification of the genus Thermoanaerobacter: taxonomic emendations and new combinations. Anaerobe 2026; 0:103027. 🇩🇿
  • ⏲ According to Bouras et al. (2026), this species is a later heterotypic synonym of Thermoanaerobacter thermocopriae (Jin et al. 1988) Collins et al. 1994. Publication: Bouras N, Dif G, Belghit S, Nguyen SV, Jacobs JL, Toumatia O, Ebada SS, Nouioui I. Genome-based reclassification of the genus Thermoanaerobacter: taxonomic emendations and new combinations. Anaerobe 2026; 0:103027. 🇩🇿
  • 🏢 Synonymy of this taxon was mentioned in an IJSEM list. Publication: Oren A, Göker M. List of changes in taxonomic opinion no. 44. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2026; 76:7140.
  • 📧 The e-mail address of the corresponding author given in the effective publication is not functional any more.
  • ❗ Thermoanaerobacter mathranii is the correct name instead if this species is regarded as a separate species (i.e., if its nomenclatural type is not assigned to another species whose name is validly published, legitimate and not rejected and has priority) within a separate genus Thermoanaerobacter.
  • 🧬 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 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.
  • 🎓 Name mentioned 25 times in PubMed until 2026-06-11.

Subdivision:

Number of child taxa with a validly published and correct name: 1
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	synonym

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. 🇩🇰

Linking: To permanently link to this page, use https://doi.org/10.83108/rn.782508Copy to clipboardLink copied to clipboard

Record number: 782508

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  • Version	Date	JSON
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