Name: Thiomicrospira denitrificans Timmer-ten Hoor 1975 (Approved Lists 1980)

Category: Species

Proposed as: sp. nov.

Etymology: de.ni.tri’fi.cans. N.L. inf. v. denitrificare, to denitrify; N.L. part. adj. denitrificans, denitrifying

Gender: feminine

Type strain: ATCC 33889; DSM 1251

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: L40808 Analyse FASTA

Effective publication: Timmer-Ten Hoor A. A new type of thiosulphate oxidizing, nitrate reducing microorganism: Thiomicrospira denitrificans sp. nov. Netherlands Journal of Sea Research 1975; 9:344-351.

IJSEM list: Skerman VBD, McGowan V, Sneath PHA. Approved lists of bacterial names. Int J Syst Bacteriol 1980; 30:225-420.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym

Correct name: Sulfurimonas denitrificans (Timmer-ten Hoor 1975) Takai et al. 2006

Risk group: 1

• Synonyms:

  • Name	Kind
    Sulfurimonas denitrificans (Timmer-ten Hoor 1975) Takai et al. 2006	homotypic synonym, validly published under the ICNP

• Notes:
  • ❗ Thiomicrospira denitrificans 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 Thiomicrospira.
  • 😷 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.
  • 🎓 Name mentioned 18 times in PubMed until 2024-03-27.
  • 🧍 Thiomicrospira denitrificans Timmer-ten Hoor 1975 (Approved Lists 1980) should be reclassified because its belongs to the ε-subclass of the Proteobacteria [1, 2]. In 2006, Takai et al. propose the new combination Sulfurimonas denitrificans (Timmer-ten Hoor 1975) Takai et al. 2006 [3] (see below). Publication: On SLW. International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Campylobacter and related bacteria. Minutes of the meetings, 2 and 4 September 2001, Freiburg, Germany. Int. J. Syst. Evol. Microbiol. 2002; 52:2339-2341.
  • 🧍 Thiomicrospira denitrificans Timmer-ten Hoor 1975 (Approved Lists 1980) should be reclassified because its belongs to the ε-subclass of the Proteobacteria [1, 2]. — 🧍 On the Approved Lists of Bacterial Names and on the Approved Lists of Bacterial Names (Amended Edition), the page numbers of the effective publication are cited as 343-351. Publication: Brinkhoff T, Muyzer G, Wirsen CO, Kuever J. Thiomicrospira chilensis sp. nov., a mesophilic obligately chemolithoautotrophic sulfuroxidizing bacterium isolated from a Thioploca mat. Int J Syst Bacteriol 1999; 49:875-879.

Parent taxon: Thiomicrospira Kuenen and Veldkamp 1972 (Approved Lists 1980)

Assigned by: Timmer-Ten Hoor A. A new type of thiosulphate oxidizing, nitrate reducing microorganism: Thiomicrospira denitrificans sp. nov. Netherlands Journal of Sea Research 1975; 9:344-351.

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Record number: 785310