Name: Leuconostoc pseudomesenteroides Farrow et al. 1989

Category: Species

Proposed as: sp. nov.

Etymology: pseu.do.me.sen.te.ro.i’des. Gr. masc./fem. adj. pseudês, false; N.L. adj. mesenteroides, a specific epithet; N.L. neut. adj. pseudomesenteroides, false Leuconostoc mesenteroides

Pronunciation (Latin), gender: … pse͡u-do-me-sen-te-ro-I-des, neuter

Type strain: ATCC 12291; CCUG 30063; CIP 103316; DSM 20193; JCM 9696; LMG 11482; NCCB 83005; NCDO 768; NCFB 768; NCIB 8699; NCIMB 8699

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AB023237 Analyse FASTA

Valid publication: Farrow JAE, Facklam RR, Collins MD. Nucleic acid homologies of some vancomycin-resistant leuconostocs and description of Leuconostoc citreum sp. nov. and Leuconostoc pseudomesenteroides sp. nov. Int. J. Syst. Bacteriol. 1989; 39:279-283. 🇬🇧

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name (and explicitly recommended for medical use)

Risk group: 1

• Notes:
  • 😷 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 182 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 pathogenicity of the species itself.
  • 🧍 According to Bartlett et al. (2022), this species is an established human pathogen. Publication: Bartlett A, Padfield D, Lear L, Bendall R, Vos M. A comprehensive list of bacterial pathogens infecting humans. Microbiology (Reading) 2022; 168:0. 🇬🇧

Parent taxon: Leuconostoc van Tieghem 1878 (Approved Lists 1980)

Assigned by: Farrow JAE, Facklam RR, Collins MD. Nucleic acid homologies of some vancomycin-resistant leuconostocs and description of Leuconostoc citreum sp. nov. and Leuconostoc pseudomesenteroides sp. nov. Int. J. Syst. Bacteriol. 1989; 39:279-283. 🇬🇧

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Record number: 777558