Name: Thiobacillus denitrificans (ex Beijerinck 1904) Kelly and Harrison 1989

Category: Species

Proposed as: sp. nov., nom. rev.

Etymology: de.ni.tri’fi.cans. N.L. v. denitrifico, denitrify; N.L. masc. part. adj. denitrificans, denitrifying

Pronunciation (Latin), gender: … de-ni-TRI-fi-kans, masculine

Type strain: AB7; ATCC 23644; CIP 104767; DSM 12475; JCM 3870; NCIB 9548; NCIMB 9548

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AJ243144 Analyse FASTA

Effective publication: Kelly DP, Harrison AP. Genus Thiobacillus Beijerinck 1904b, 597AL. In: Staley JT, Bryant MP, Pfennig N, Holt JG (eds), Bergey's Manual of Systematic Bacteriology, first edition, vol. 3, The Williams & Wilkins Co., Baltimore, 1989, p. 1842-1858.

IJSEM list: Anonymous. Validation list no. 31. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1989; 39:495-497.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Synonyms:

  • Name	Kind
    "Thiobacillus denitrificans" Beijerinck 1904	homotypic synonym, not validly published

• Emendations:
  • Kelly and Wood 2000 Kelly DP, Wood AP. Confirmation of Thiobacillus denitrificans as a species of the genus Thiobacillus, in the beta-subclass of the Proteobacteria, with strain NCIMB 9548 as the type strain. Int J Syst Evol Microbiol 2000; 50:547-550. 🇬🇧 Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 50, part 2 of the IJSEM. Int J Syst Evol Microbiol 2000; 50:951-953.
    Notes:
    • 📧 The e-mail address of the corresponding author given in the associated publication is not functional any more.

• Notes:
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Animal classification RG: 1 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 1". — 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. — 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 173 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. 🇺🇸
  • 🧍 See also: Publication: Euzeby JP, Kudo T. Corrigenda to the validation lists. Int J Syst Evol Microbiol 2001; 51:1933-1938. 🇫🇷

Parent taxon: Thiobacillus Beijerinck 1904 (Approved Lists 1980)

Assigned by: Kelly DP, Harrison AP. Genus Thiobacillus Beijerinck 1904b, 597AL. In: Staley JT, Bryant MP, Pfennig N, Holt JG (eds), Bergey's Manual of Systematic Bacteriology, first edition, vol. 3, The Williams & Wilkins Co., Baltimore, 1989, p. 1842-1858.

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Record number: 782710