Name: Thiocystis violascens (Perty 1852) Imhoff et al. 1998

Category: Species

Proposed as: comb. nov.

Basonym: Chromatium violascens Perty 1852 (Approved Lists 1980)

Etymology: N.L. fem. part. adj. violascens, becoming violet

Gender: feminine

Type strain: 6111; ATCC 17096; Carmel River; DSM 198; SMG 198

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AJ224438 Analyse FASTA

Valid publication: Imhoff JF, Suling J, Petri R. Phylogenetic relationships among the Chromatiaceae, their taxonomic reclassification and description of the new genera Allochromatium, Halochromatium, Isochromatium, Marichromatium, Thiococcus, Thiohalocapsa and Thermochromatium. Int J Syst Bacteriol 1998; 48:1129-1143.

IJSEM list: Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 48, part 4 of the IJSB. Int J Syst Bacteriol 1999; 49:5-6.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Synonyms:

  • Name	Kind
    Chromatium violascens Perty 1852 (Approved Lists 1980)	homotypic synonym, validly published under the ICNP

• Notes:
  • 📧 The e-mail address of the corresponding author given in the effective publication is not functional any more.
  • 🧬 The phylogenomic assignment score of this taxon is -0.01035 (N = 14).
  • 😷 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 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 2024-03-27.
  • 🧍 In the paper by Imhoff et al. 1998 (table 1), the type strain DSM 198 is erroneously cites ad DSM 168. — The type strain ATCC 17096 has been deaccessioned. — Tang J. Personal communication, 2001-12-20.

Parent taxon: Thiocystis Winogradsky 1888 (Approved Lists 1980)

Assigned by: Imhoff JF, Suling J, Petri R. Phylogenetic relationships among the Chromatiaceae, their taxonomic reclassification and description of the new genera Allochromatium, Halochromatium, Isochromatium, Marichromatium, Thiococcus, Thiohalocapsa and Thermochromatium. Int J Syst Bacteriol 1998; 48:1129-1143.

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Record number: 782737