Name: Chromobacterium pseudoviolaceum Kämpfer et al. 2009

Category: Species

Proposed as: sp. nov.

Etymology: pseu.do.vi.o.la’ce.um. Gr. neut. adj. pseudes, false; L. neut. adj. violaceum, violet-coloured and also a bacterial specific epithet; N.L. neut. adj. pseudoviolaceum, not the true Chromobacterium violaceum

Pronunciation (Latin), gender: … pse͡u-do-wi-o-LA-ke-um, neuter

Type strain: ATCC 7461; CCM 2076; DSM 23279; Lewitus; LMG 3953; NCIB 8182; NCIMB 8182; NCTC 8683; P.H.A. Sneath strain LW

Conduct genome-based taxonomy at

16S rRNA gene: AJ871128 Analyse FASTA

Valid publication: Kampfer P, Busse HJ, Scholz HC. Chromobacterium piscinae sp. nov. and Chromobacterium pseudoviolaceum sp. nov., from environmental samples. Int J Syst Evol Microbiol 2009; 59:2486-2490. 🇩🇪

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 59, part 10 of the IJSEM. Int J Syst Evol Microbiol 2010; 60:3-4.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym (and not recommended for medical use)

Correct name: Chromobacterium violaceum Bergonzini 1880 (Approved Lists 1980)

Risk group: 2

• Synonyms:

  • Name	Kind
    Chromobacterium violaceum Bergonzini 1880 (Approved Lists 1980)	heterotypic synonym, validly published under the ICNP

• Notes:
  • ⏲ According to Kämpfer et al. (2018), this species is a later heterotypic synonym of Chromobacterium violaceum Bergonzini 1880 (Approved Lists 1980). Publication: Kampfer P, Glaeser SP, Soby SD. Chromobacterium pseudoviolaceum Kampfer et al. 2009 is a later heterotypic synonym of Chromobacterium violaceum Bergonzini 1880. Int J Syst Evol Microbiol 2018; 68:2967-2968. 🇩🇪
  • 🏢 Synonymy of this taxon was mentioned in an IJSEM list. Publication: Oren A, Garrity GM. Notification list. Notification that new names and new combinations have appeared in volume 68, part 9 of the IJSEM. Int J Syst Evol Microbiol 2018; 68:3685-3687.
  • ❗ Chromobacterium pseudoviolaceum 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 Chromobacterium.
  • 😷 The risk group for Belgium has been imported on 2024-02-05. The full classification is: risk group = 2, note = "human and animal pathogen - biological class of risk animal: 2". — The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 2, note = "ht". — 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 5 times in PubMed until 2025-06-04.
  • 🙅 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as a synonym of the name to be applied to this species. The name is on LoRN because of the recorded risk group of the species itself.
  • 🧍 In the paper by Kämpfer et al. 2009, the type strain is cited as LMG 3953 (= CCM 2076 = NCTC 8182). However, the strain NCTC 8182 is a strain of Streptococcus agalactiae! Publication: . Erratum. Int. J. Syst. Evol. Microbiol. 2009; 59:3184.

Parent taxon: Chromobacterium Bergonzini 1880 (Approved Lists 1980)

Assigned by: Kampfer P, Busse HJ, Scholz HC. Chromobacterium piscinae sp. nov. and Chromobacterium pseudoviolaceum sp. nov., from environmental samples. Int J Syst Evol Microbiol 2009; 59:2486-2490. 🇩🇪

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Record number: 788119