Name: Thermotoga petrophila Takahata et al. 2001

Category: Species

Proposed as: sp. nov.

Etymology: pe.tro’phi.la. Gr. fem. n. petra, rock; N.L. fem. adj. suff. -phila, friend, loving; from Gr. fem. adj. philê, loving; N.L. fem. adj. petrophila, rock-loving

Pronunciation (Latin), gender: t^her-MO-to-ga pe-TRO-p^hi-la, feminine

Type strain: DSM 13995; JCM 10881; RKU-1

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AB027016 Analyse FASTA

Valid publication: Takahata Y, Nishijima M, Hoaki T, Maruyama T. Thermotoga petrophila sp. nov. and Thermotoga naphthophila sp. nov., two hyperthermophilic bacteria from the Kubiki oil reservoir in Niigata, Japan. Int J Syst Evol Microbiol 2001; 51:1901-1909. 🇯🇵

IJSEM list: Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 51, part 5 of the IJSEM. Int J Syst Evol Microbiol 2001; 51:1947-1948.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Synonyms:

  • Name	Kind
    Thermotoga naphthophila Takahata et al. 2001	heterotypic synonym, validly published under the ICNP

• Notes:
  • ⏰ According to Summers et al. (2020), this species is an earlier heterotypic synonym of Thermotoga naphthophila Takahata et al. 2001. Publication: Summers ZM, Belahbib H, Pradel N, Bartoli M, Mishra P, Tamburini C, Dolla A, Ollivier B, Armougom F. A novel Thermotoga strain TFO isolated from a Californian petroleum reservoir phylogenetically related to Thermotoga petrophila and T. naphthophila, two thermophilic anaerobic isolates from a Japanese reservoir: Taxonomic and genomic considerations. Syst Appl Microbiol 2020; 43:126132. 🇺🇸
  • 🏢 Synonymy of this taxon was mentioned in an IJSEM list. Publication: Oren A, Garrity GM. List of changes in taxonomic opinion no. 34. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2021; 71:4816.
  • 😷 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 51 times in PubMed until 2026-06-11.

Parent taxon: Thermotoga Stetter and Huber 1986

Assigned by: Takahata Y, Nishijima M, Hoaki T, Maruyama T. Thermotoga petrophila sp. nov. and Thermotoga naphthophila sp. nov., two hyperthermophilic bacteria from the Kubiki oil reservoir in Niigata, Japan. Int J Syst Evol Microbiol 2001; 51:1901-1909. 🇯🇵

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Record number: 782650