Name: Allisonella histaminiformans Garner et al. 2003

Category: Species

Proposed as: sp. nov.

Etymology: his.ta.mi.ni.for’mans. N.L. gen. neut. n. histamini, histamine; L. pres. part. formans, forming; N.L. fem. part. adj. histaminiformans, histamine forming

Pronunciation (Latin), gender: … his-ta-mi-ni-FOR-mans, feminine

Type strain: ATCC BAA-610; CCUG 48567; DSM 15230; MR2

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AF548373 Analyse FASTA

Effective publication: Garner MR, Flint JF, Russell JB. Allisonella histaminiformans gen. nov., sp. nov. A novel bacterium that produces histamine, utilizes histidine as its sole energy source, and could play a role in bovine and equine laminitis. Syst Appl Microbiol 2002; 25:498-506. 🇺🇸

IJSEM list: Anonymous. Validation list no. 90. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2003; 53:373.

Nomenclatural status: validly published under the ICNP

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

Correct name: Dialister histaminiformans (Garner et al. 2003) Heng et al. 2025

Risk group: 1

• Synonyms:

  • Name	Kind
    Dialister histaminiformans (Garner et al. 2003) Heng et al. 2025	homotypic synonym, validly published under the ICNP

• Notes:
  • 🥇 Nomenclatural type of the genus Allisonella Garner et al. 2003. Publication: Garner MR, Flint JF, Russell JB. Allisonella histaminiformans gen. nov., sp. nov. A novel bacterium that produces histamine, utilizes histidine as its sole energy source, and could play a role in bovine and equine laminitis. Syst Appl Microbiol 2002; 25:498-506. 🇺🇸
  • ❗ Allisonella histaminiformans 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 Allisonella.
  • 😷 The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 1, 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 6 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.
  • 🧍 According to Ludwig et al. (2021), this "species affiliates away from its type species and may be reclassified as Dialister". Publication: Ludwig W, Viver T, Westram R, Francisco Gago J, Bustos-Caparros E, Knittel K, Amann R, Rossello-Mora R. Release LTP_12_2020, featuring a new ARB alignment and improved 16S rRNA tree for prokaryotic type strains. Syst Appl Microbiol 2021; 44:126218. 🇪🇸

Parent taxon: Allisonella Garner et al. 2003

Assigned by: Garner MR, Flint JF, Russell JB. Allisonella histaminiformans gen. nov., sp. nov. A novel bacterium that produces histamine, utilizes histidine as its sole energy source, and could play a role in bovine and equine laminitis. Syst Appl Microbiol 2002; 25:498-506. 🇺🇸

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

Record number: 773080