Name: Hydrogenophaga pseudoflava (Auling et al. 1978) Willems et al. 1989

Category: Species

Proposed as: comb. nov.

Basonym: Pseudomonas pseudoflava Auling et al. 1978 (Approved Lists 1980)

Etymology: pseu.do.fla’va. Gr. masc./fem. adj. pseudês, false; L. fem. adj. flava, yellow, and also a specific epithet; N.L. fem. adj. pseudoflava, not the true (Hydrogenophaga) flava, referring to the close relationship to Hydrogenophaga flava

Pronunciation, gender: pse͡u-do-FLA-wa, feminine

Type strain: ATCC 33668; CCUG 13799; CFBP 2439; CIP 103270; DSM 1034; GA3; JCM 21410; LMG 5945; NBRC 102511

Conduct genome-based taxonomy at

16S rRNA gene: AF078770 Analyse FASTA

Valid publication: Willems A, Busse J, Goor M, Pot B, Falsen E, Jantzen E, Hoste B, Gillis M, Kersters K, Auling G, et al. Hydrogenophaga, a new genus of hydrogen-oxidizing bacteria that includes Hydrogenophaga flava comb. nov. (formerly Pseudomonas flava), Hydrogenophaga palleronii (formerly Pseudomonas palleronii), Hydrogenophaga pseudoflava (formerly Pseudomonas pseudoflava and "Pseudomonas carboxydoflava") and Hydrogenophaga taeniospiralis (formerly Pseudomonas taeniospiralis). Int. J. Syst. Bacteriol. 1989; 39:319-333.

Nomenclatural status: validly published under the ICNP

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

Risk group: 1

• Synonyms:

  • Name	Kind
    Pseudomonas pseudoflava Auling et al. 1978 (Approved Lists 1980)	homotypic synonym, validly published under the ICNP

• Notes:
  • 🙄 The epithet of this taxon name is occasionally misprinted in some sources as: "pseudojlava".
  • 😷 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 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 39 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 other species in the genus.
  • 🧍 Synonym "Pseudomonas carboxydoflava". — Leibniz Institute DSMZ. Prokaryotic Nomenclature Up-to-date, 2018-12-11.

Parent taxon: Hydrogenophaga Willems et al. 1989

Assigned by: Willems A, Busse J, Goor M, Pot B, Falsen E, Jantzen E, Hoste B, Gillis M, Kersters K, Auling G, et al. Hydrogenophaga, a new genus of hydrogen-oxidizing bacteria that includes Hydrogenophaga flava comb. nov. (formerly Pseudomonas flava), Hydrogenophaga palleronii (formerly Pseudomonas palleronii), Hydrogenophaga pseudoflava (formerly Pseudomonas pseudoflava and "Pseudomonas carboxydoflava") and Hydrogenophaga taeniospiralis (formerly Pseudomonas taeniospiralis). Int. J. Syst. Bacteriol. 1989; 39:319-333.

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Record number: 776948