Name: Thiobacillus acidophilus (ex Guay and Silver 1975) Harrison 1983

Category: Species

Proposed as: sp. nov., nom. rev.

Etymology: a.ci.do’phi.lus. L. neut. adj. acidum, an acid; from L. masc. adj. acidus, sour; N.L. masc. adj. suff. -philus, friend, loving; from Gr. masc. adj. philos, on; N.L. masc. adj. acidophilus, acid loving

Gender: masculine

Type strain: ATCC 27807; DSM 700

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: D86511 Analyse FASTA

Valid publication: Harrison Jr. AP. Genomic and physiological comparisons between heterotrophic thiobacilli and Acidiphilium cryptum, Thiobacillus versutus sp. nov., and Thiobacillus acidophilus nom. rev. Int. J. Syst. Bacteriol. 1983; 33:211-217.

Nomenclatural status: validly published under the ICNP

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

Correct name: Acidiphilium acidophilum (Harrison 1983 ex Guay and Silver 1975) Hiraishi et al. 1998

Risk group: 1

• Synonyms:

  • Name	Kind
    "Thiobacillus acidophilus" Guay and Silver 1975	homotypic synonym, not validly published
    Acidiphilium acidophilum (Harrison 1983 ex Guay and Silver 1975) Hiraishi et al. 1998	homotypic synonym, validly published under the ICNP

• Notes:
  • ❗ Thiobacillus acidophilus 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 Thiobacillus.
  • 😷 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 24 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 other species in the genus.

Parent taxon: Thiobacillus Beijerinck 1904 (Approved Lists 1980)

Assigned by: Harrison Jr. AP. Genomic and physiological comparisons between heterotrophic thiobacilli and Acidiphilium cryptum, Thiobacillus versutus sp. nov., and Thiobacillus acidophilus nom. rev. Int. J. Syst. Bacteriol. 1983; 33:211-217.

Linking: To permanently link to this page, use https://lpsn.dsmz.de/species/thiobacillus-acidophilusCopy to clipboardLink copied to clipboard

Record number: 782704