Name: Bifidobacterium pseudolongum subsp. pseudolongum (Mitsuoka 1969) Yaeshima et al. 1992

Category: Subspecies

Proposed as: subsp. nov.

Basonym: Bifidobacterium pseudolongum Mitsuoka 1969 (Approved Lists 1980)

Etymology: pseu.do.lon’gum. Gr. masc./fem. adj. pseudês, false; L. neut. adj. longum, a specific epithet; N.L. neut. adj. pseudolongum, false (Bifidobacterium) longum

Pronunciation (Latin), gender: … pse͡u-do-LON-gum, neuter

Type strain: ATCC 25526; BCRC 14673; CCRC 14673; CCUG 34981; CGMCC 1.2185; CIP 105352; DSM 20099; HAMBI 113; JCM 1205; LMG 11571; PNC-2-9G

See detailed strain information at

Effective publication: Yaeshima T, Fujisawa T, Mitsuoka T. Bifidobacterium globosum, subjective synonym of Bifidobacterium pseudolongum, and description of Bifidobacterium pseudolongum subsp. pseudolongum comb. nov. and Bifidobacterium pseudolongum subsp. globosum comb. nov. Syst. Appl. Microbiol. 1992; 15:380-385.

IJSEM list: Anonymous. Validation list no. 43. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1992; 42:656-657.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym of its species (division into subspecies abandoned)

Risk group: 1

• Notes:
  • 🙋 This subspecies could be automatically created (rule 40d) by the valid publication of Bifidobacterium pseudolongum subsp. globosum (Biavati et al. 1982 ex Scardovi et al. 1969) Yaeshima et al. 1992 but an explicit description was also provided. Publication: Yaeshima T, Fujisawa T, Mitsuoka T. Bifidobacterium globosum, subjective synonym of Bifidobacterium pseudolongum, and description of Bifidobacterium pseudolongum subsp. pseudolongum comb. nov. and Bifidobacterium pseudolongum subsp. globosum comb. nov. Syst. Appl. Microbiol. 1992; 15:380-385.
  • ❗ Bifidobacterium pseudolongum subsp. pseudolongum is the correct name instead if this subspecies is regarded as a separate subspecies (i.e., if its nomenclatural type is not assigned to another subspecies whose name is validly published, legitimate and not rejected and has priority) within a separate species Bifidobacterium pseudolongum within a separate genus Bifidobacterium.
  • 😷 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.
  • 🙆 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as the name to be applied to this subspecies. The name is on LoRN because of the recorded risk group of the genus.
  • 🧍 The original authorship, Preobrazhenskaya et al. 1975, was corrected according to the new Rule 40d. Publication: Garrity GM, Labeda DP, Oren A. Judicial Commission of the International Committee on Systematics of Prokaryotes. XIIth International (IUMS) Congress of Bacteriology and Applied Microbiology. Minutes of the meetings, 3, 4 and 6 August 2008, Istanbul, Turkey. Int. J. Syst. Evol. Microbiol. 2011; 61:2775-2780. 🇺🇸

Parent taxon: Bifidobacterium pseudolongum Mitsuoka 1969 (Approved Lists 1980)

Assigned by: Yaeshima T, Fujisawa T, Mitsuoka T. Bifidobacterium globosum, subjective synonym of Bifidobacterium pseudolongum, and description of Bifidobacterium pseudolongum subsp. pseudolongum comb. nov. and Bifidobacterium pseudolongum subsp. globosum comb. nov. Syst. Appl. Microbiol. 1992; 15:380-385.

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Record number: 774053