Name: Acholeplasma laidlawii (Sabin 1941) Edward and Freundt 1970 (Approved Lists 1980)

Category: Species

Proposed as: comb. nov.

Basonym: "Sapromyces laidlawi" Sabin 1941

Etymology: laid.law’i.i. N.L. gen. masc. n. laidlawii, of Laidlaw, named after P. Laidlaw, one of the microbiologists who first isolated this species

Gender: neuter

Type strain: ATCC 23206; CIP 75.27; DSM 23060; IFO 14400; NBRC 14400; NCTC 10116

Conduct genome-based taxonomy at

16S rRNA gene: AB680603 Analyse FASTA

Effective publication: Edward DG, Freundt EA. Amended nomenclature for strains related to Mycoplasma laidlawii. J Gen Microbiol 1970; 62:1-2.

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: correct name (and explicitly recommended for medical use)

Risk group: 2

• Synonyms:

  • Name	Kind
    "Sapromyces laidlawi" Sabin 1941	homotypic synonym, inaccurate spelling
    "Sapromyces laidlawii" corrig. Sabin 1941	homotypic synonym, not validly published, basonym of name in Approved Lists
    "Mycoplasma laidlawii" (Sabin 1941) Freundt 1955	homotypic synonym, not validly published

• Notes:
  • 🥇 Nomenclatural type of the genus Acholeplasma Edward and Freundt 1970 (Approved Lists 1980). Publication: Edward DG, Freundt EA. Amended nomenclature for strains related to Mycoplasma laidlawii. J Gen Microbiol 1970; 62:1-2.
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Animal classification RG: 2 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 2". — The risk group for Swiss Confederation has been imported on 2024-02-01. The full classification is: risk group = 2, note = "PV". — The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 2, note = "t". — 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 757 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 the species itself.
  • 🧍 According to Bartlett et al. (2022), no evidence of human infection was found for this species. Publication: Bartlett A, Padfield D, Lear L, Bendall R, Vos M. A comprehensive list of bacterial pathogens infecting humans. Microbiology 2022; 168:0.
  • 🧍 On the Approved Lists of Bacterial Names, and on the Approved Lists of Bacterial Names (Amended Edition), this taxon is incorrectly cited as Acholeplasma laidlawii (Freundt 1955 [sic]) Edward and Freundt 1970. Publication: Tully JG. Genus I. Acholeplasma Edward and Freundt 1970, 1AL. In: Krieg NR, Holt JG (eds), Bergey's Manual of Systematic Bacteriology, first edition, vol. 1, The Williams & Wilkins Co, Baltimore, 1984, p. 775-781.

Parent taxon: Acholeplasma Edward and Freundt 1970 (Approved Lists 1980)

Assigned by: Edward DG, Freundt EA. Amended nomenclature for strains related to Mycoplasma laidlawii. J Gen Microbiol 1970; 62:1-2.

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Record number: 772547