Name: Thermotoga caldifontis Mori et al. 2014

Category: Species

Proposed as: sp. nov.

Etymology: cal.di.fon’tis. L. masc. adj. caldus, hot; L. masc. n. fons (gen. fontis), a spring; N.L. gen. masc. n. caldifontis, of a hot spring, pertaining to the source of isolation of the type strain

Gender: feminine

Type strain: AZM44c09; DSM 23272; NBRC 106116

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AP014509 Analyse FASTA

Valid publication: Mori K, Yamazoe A, Hosoyama A, Ohji S, Fujita N, Ishibashi J, Kimura H, Suzuki K. Thermotoga profunda sp. nov. and Thermotoga caldifontis sp. nov., anaerobic thermophilic bacteria isolated from terrestrial hot springs. Int J Syst Evol Microbiol 2014; 64:2128-2136.

IJSEM list: Oren A, Garrity GM. Notification list. Notification that new names and new combinations have appeared in volume 64, part 6 of the IJSEM. Int J Syst Evol Microbiol 2014; 64:2930-2931.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Synonyms:

  • Name	Kind
    "Pseudothermotoga caldifontis" (Mori et al. 2014) Belahbib et al. 2018	homotypic synonym, not validly published

• Notes:
  • 😷 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 3 times in PubMed until 2024-03-27.
  • 🧍 According to Ludwig et al. (2021), this "species affiliates with Pseudothermotoga and should be classified". Publication: Ludwig W, Viver T, Westram R, Francisco Gago J, Bustos-Caparros E, Knittel K, Amann R, Rossello-Mora R. Release LTP_12_2020, featuring a new ARB alignment and improved 16S rRNA tree for prokaryotic type strains. Syst Appl Microbiol 2021; 44:126218.

Parent taxon: Thermotoga Stetter and Huber 1986

Assigned by: Mori K, Yamazoe A, Hosoyama A, Ohji S, Fujita N, Ishibashi J, Kimura H, Suzuki K. Thermotoga profunda sp. nov. and Thermotoga caldifontis sp. nov., anaerobic thermophilic bacteria isolated from terrestrial hot springs. Int J Syst Evol Microbiol 2014; 64:2128-2136.

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Record number: 791864