Name: Prosthecochloris vibrioformis (Pelsh 1936) Imhoff 2003

Category: Species

Proposed as: comb. nov.

Basonym: Chlorobium vibrioforme Pelsh 1936 (Approved Lists 1980)

Etymology: vi.bri.o.for’mis. L. masc./fem. adj. suff. -formis, form; N.L. fem. adj. vibrioformis, shaped like a curved cell, like a vibrio [probably better: vibrioniformis]

Pronunciation, gender: wi-bri-o-FOR-mis, feminine

Type strain: BCRC 81026; DSM 260; Moss Ldg.; SMG 260

See detailed strain information at

Conduct genome-based taxonomy at

Valid publication: Imhoff JF. Phylogenetic taxonomy of the family Chlorobiaceae on the basis of 16S rRNA and fmo (Fenna-Matthews-Olson protein) gene sequences. Int J Syst Evol Microbiol 2003; 53:941-951.

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 53, part 4 of the IJSEM. Int J Syst Evol Microbiol 2003; 53:1703-1705.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Synonyms:

  • Name	Kind
    Chlorobium vibrioforme Pelsh 1936 (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 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 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 4 times in PubMed until 2025-06-04.
  • 🧍 Other synonym: "Chlorobium vibrioformis" (sic) Pelsh 1936. According to Rules 27(3) and 30, Prosthecochloris vibrioformis (Pelsh 1936) Imhoff 2003 was not originally to be regarded as validly published because, at the time of publication, the type strain was not deposited in two publicly accessible service collections. However, an additional deposit was established in the aftermath. Publication: Oren A, Arahal DR, Goker M, Moore ERB, Rossello-Mora R, Sutcliffe IC. International Code of Nomenclature of Prokaryotes. Prokaryotic Code (2022 Revision). Int J Syst Evol Microbiol 2023; 73:5585.
  • 🧍 According to Rules 27(3) and 30, Prosthecochloris vibrioformis (Pelsh 1936) Imhoff 2003 is not validly published because, at the time of publication, the type strain was not deposited in two publicly accessible service collections in different countries. According to the Judicial Opinion 81, authors or this name, or other scientists who wish to have this name validly published, should submit evidence of the deposit of the type strain in additional collections to the List Editor (either directly or via the IJSEM Editorial Office) before the next meeting of the Judicial Commission in Sapporo, Japan, in 2011. After that time, the name will be ruled not to have been validly published. If, after that deadline, the authors or other scientists wish to have this name validly published, this may be done by confirming that the name is in accordance with the requirements of the Code and either by requesting valid publication via the Validation Lists or by inclusion of the proposal in an original article in the IJSEM. The details of valid publication will then make reference to those publications. If authors or other scientists feel that an exception should be granted to Rule 30, requiring deposit of the type in two different collections in two different countries, they should contact the Editorial Office of the IJSEM. 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: Prosthecochloris Gorlenko 1970 (Approved Lists 1980)

Assigned by: Imhoff JF. Phylogenetic taxonomy of the family Chlorobiaceae on the basis of 16S rRNA and fmo (Fenna-Matthews-Olson protein) gene sequences. Int J Syst Evol Microbiol 2003; 53:941-951.

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Record number: 779857