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. 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.
  • 🎓 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