Name: Comamonas denitrificans Gumaelius et al. 2001

Category: Species

Proposed as: sp. nov.

Etymology: de.ni.tri’fi.cans. L. prep. de, away from; L. neut. n. nitrum, nitrate; N.L. v. denitrifico, to denitrify; N.L. fem. part. adj. denitrificans, denitrifying

Gender: feminine

Type strain: 123; ATCC 700936; CCUG 44425; DSM 17887

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AF233877 Analyse FASTA

Valid publication: Gumaelius L, Magnusson G, Pettersson B, Dalhammar G. Comamonas denitrificans sp. nov., an efficient denitrifying bacterium isolated from activated sludge. Int J Syst Evol Microbiol 2001; 51:999-1006. 🇸🇪

IJSEM list: Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 51, part 3 of the IJSEM. Int J Syst Evol Microbiol 2001; 51:1231-1233.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name (and explicitly recommended for medical use)

Risk group: 1

• Notes:
  • 😷 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 12 times in PubMed until 2025-06-04.
  • 🙆 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as the name to be applied to this species. The name is on LoRN because of the recorded risk group of the genus.
  • 🧍 According to Rules 27(3) and 30, this name is not validly published because the effective publication only documents deposit of the type strain in a single recognized culture collection. However, according to the Judicial Opinion 81, Comamonas denitrificans Gumaelius et al. 2001 is to be considered to be validly published. Publication: Euzeby JP, Tindall BJ. Status of strains that contravene Rules 27(3) and 30 of the Bacteriological Code. Request for an opinion. Int J Syst Evol Microbiol 2004; 54:293-301. 🇫🇷

Parent taxon: Comamonas (ex Davis and Park 1962) De Vos et al. 1985

Assigned by: Gumaelius L, Magnusson G, Pettersson B, Dalhammar G. Comamonas denitrificans sp. nov., an efficient denitrifying bacterium isolated from activated sludge. Int J Syst Evol Microbiol 2001; 51:999-1006. 🇸🇪

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Record number: 775077