Name: Rhodopseudomonas acidophila Pfennig 1969 (Approved Lists 1980)

Category: Species

Proposed as: sp. nov.

Etymology: a.ci.do’phi.la. L. neut. adj. acidum, an acid; from L. masc. adj. acidus, sour; N.L. adj. philus -a -um, friend, loving; from Gr. adj. philos -ê -on, loving; N.L. fem. adj. acidophila, acid-loving

Pronunciation, gender: … a-ki-DO-p^hi-la, feminine

Type strain: ATCC 25092; CIP 103962; Crystal Lake; DSM 137; LMG 4304; Pfennig 7050

Conduct genome-based taxonomy at

16S rRNA gene: FR733696 Analyse FASTA

Effective publication: Pfennig N. Rhodopseudomonas acidophila, sp. n., a new species of the budding purple nonsulfur bacteria. J Bacteriol 1969; 99:597-602.

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

Correct name: Rhodoblastus acidophilus (Pfennig 1969) Imhoff 2001

Risk group: 1

• Synonyms:

  • Name	Kind
    Rhodoblastus acidophilus (Pfennig 1969) Imhoff 2001	homotypic synonym, validly published under the ICNP

• Notes:
  • ❗ Rhodopseudomonas acidophila 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 Rhodopseudomonas.
  • 😷 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 146 times in PubMed until 2025-06-04.

Parent taxon: Rhodopseudomonas Czurda and Maresch 1937 (Approved Lists 1980)

Assigned by: Pfennig N. Rhodopseudomonas acidophila, sp. n., a new species of the budding purple nonsulfur bacteria. J Bacteriol 1969; 99:597-602.

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Record number: 780496