Species Pseudomonas delafieldii

Name: Pseudomonas delafieldii Davis 1970 (Approved Lists 1980)

Category: Species

Proposed as: sp. nov.

Etymology: de.la.fiel’di.i. N.L. gen. masc. n. delafieldii, of Delafield, named after F.P. Delafield, who first isolated this organism

Pronunciation, gender: … de-la-FIEL-di-i, feminine

Type strain: ATCC 17505; CCUG 1779; CFBP 2442; CFBP 3609; CIP 103303; DSM 64; LMG 5943

Conduct genome-based taxonomy at

16S rRNA gene: AF078764 Analyse FASTA

Effective publication: Davis DH, Stanier RY, Doudoroff M, Mandel M. Taxonomic studies on some gram negative polarly flagellated "hydrogen bacteria" and related species. Arch Mikrobiol 1970; 70:1-13.

IJSEM list: Skerman VBD, McGowan V, Sneath PHA. Approved lists of bacterial names. Int J Syst Bacteriol 1980; 30:225-420.

Nomenclatural status: validly published under the ICNP

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

Correct name: Acidovorax delafieldii (Davis 1970) Willems et al. 1990

Risk group: 1

Synonyms:

Name	Kind
Acidovorax delafieldii (Davis 1970) Willems et al. 1990	homotypic synonym, validly published under the ICNP

Notes:
- ❗ Pseudomonas delafieldii 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 Pseudomonas.
- ✏ The authority of the taxon name (Davis) deliberately differs from the authors of the publication (Davis et al.).
- 😷 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 Swiss Confederation has been imported on 2024-02-01. The full classification is: risk group = 1, note = "PIIC". — The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 1, note = "+". — 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 12 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 genus.

Parent taxon: Pseudomonas Migula 1894 (Approved Lists 1980)

Assigned by: Davis DH, Stanier RY, Doudoroff M, Mandel M. Taxonomic studies on some gram negative polarly flagellated "hydrogen bacteria" and related species. Arch Mikrobiol 1970; 70:1-13.

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Record number: 780003

This LPSN page was printed on 2026-01-22 01:36:47

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Species Pseudomonas delafieldii