Name: Pseudothermotoga elfii (Ravot et al. 1995) Bhandari and Gupta 2014

Category: Species

Proposed as: comb. nov.

Basonym: Thermotoga elfii Ravot et al. 1995

Etymology: el.fi’i. N.L. gen. neut. n. elfii, of ELF, named after ELF-Aquitaine

Gender: feminine

Type strain: ATCC 51869; DSM 9442; SEBR 6459; SERB

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: X80790 Analyse FASTA

Effective publication: Bhandari V, Gupta RS. Molecular signatures for the phylum (class) Thermotogae and a proposal for its division into three orders (Thermotogales, Kosmotogales ord. nov. and Petrotogales ord. nov.) containing four families (Thermotogaceae, Fervidobacteriaceae fam. nov., Kosmotogaceae fam. nov. and Petrotogaceae fam. nov.) and a new genus Pseudothermotoga gen. nov. with five new combinations. Antonie Van Leeuwenhoek 2014; 105:143-168.

IJSEM list: Oren A, Garrity GM. Validation list no. 158. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2014; 64:2184-2187.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Synonyms:

  • Name	Kind
    Thermotoga elfii Ravot et al. 1995	homotypic synonym, validly published under the ICNP

• Emendations:
  • Belahbib et al. 2018 Belahbib H, Summers ZM, Fardeau ML, Joseph M, Tamburini C, Dolla A, Ollivier B, Armougom F. Towards a congruent reclassification and nomenclature of the thermophilic species of the genus Pseudothermotoga within the order Thermotogales. Syst Appl Microbiol 2018; 41:555-563. Oren A, Garrity GM. List of changes in taxonomic opinion no. 30. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2019; 69:1850-1851.

• 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 2025-06-04.
  • 🧍 The genome of the type strain was sequenced as part of the GEBA (Genomic Encyclopedia of Bacteria and Archaea) project. Publication: Mukherjee S, Seshadri R, Varghese NJ, Eloe-Fadrosh EA, Meier-Kolthoff JP, Goker M, Coates RC, Hadjithomas M, Pavlopoulos GA, Paez-Espino D, et al. 1,003 reference genomes of bacterial and archaeal isolates expand coverage of the tree of life. Nat Biotechnol 2017; 35:676-683.

Parent taxon: Pseudothermotoga Bhandari and Gupta 2014

Assigned by: Bhandari V, Gupta RS. Molecular signatures for the phylum (class) Thermotogae and a proposal for its division into three orders (Thermotogales, Kosmotogales ord. nov. and Petrotogales ord. nov.) containing four families (Thermotogaceae, Fervidobacteriaceae fam. nov., Kosmotogaceae fam. nov. and Petrotogaceae fam. nov.) and a new genus Pseudothermotoga gen. nov. with five new combinations. Antonie Van Leeuwenhoek 2014; 105:143-168.

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Record number: 791934