Species ***Bifidobacterium* *adolescentis***

Classification:

Bacteria Bacillati Actinomycetota Actinomycetes Bifidobacteriales Bifidobacteriaceae Bifidobacterium Bifidobacterium adolescentis

Name: Bifidobacterium adolescentis Reuter 1963 (Approved Lists 1980)

Category, proposed as: species, sp. nov.

Etymology: ad.o.les.cen’tis. L. masc./fem. n. adolescens, adolescent; L. gen. masc./fem. n. adolescentis, of an adolescent

Pronunciation (Latin), gender: bi-fi-do-bak-TE-ri-um ad-o-les-KEN-tis, neuter

Type strain: ATCC 15703; BCRC 14606; CCRC 14606; CCUG 17359; CCUG 18363; CGMCC 1.2190; CIP 64.59; DSM 20083; JCM 1275; LMG 10502; NCAIM B.01822; NCTC 11814

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: M58729 Analyse FASTA

Effective publication: Reuter G. Vergleichenden Untersuchung über die Bifidus-Flora im Säuglings- und Erwachsenenstuhl. Zentralblatt für Bakteriologie, Parasitenkunde, Infektionskrankheiten und Hygiene. Abteilung I 1963; 191:486-507.

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: 1

Synonyms:

Name	Kind
Bifidobacterium faecale Choi et al. 2014	heterotypic synonym, validly published under the ICNP
Bifidobacterium stercoris Kim et al. 2010	heterotypic synonym, validly published under the ICNP

Emendations:
- Nouioui et al. 2018 Nouioui I, Carro L, Garcia-Lopez M, Meier-Kolthoff JP, Woyke T, Kyrpides NC, Pukall R, Klenk HP, Goodfellow M, Goker M. Genome-Based Taxonomic Classification of the Phylum Actinobacteria. Front Microbiol 2018; 9:2007. 🇩🇪 Oren A, Garrity GM. List of changes in taxonomic opinion no. 29. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2019; 69:13-32.
  Notes:
  - 🫂 Emendation accompanied by a proposal regarding the synonymy of the species.

Notes:
- ⏰ According to Killer et al. (2013), this species is an earlier heterotypic synonym of Bifidobacterium stercoris Kim et al. 2010. Publication: Killer J, Sedlacek I, Rada V, Havlik J, Kopecny J. Reclassification of Bifidobacterium stercoris Kim et al. 2010 as a later heterotypic synonym of Bifidobacterium adolescentis. Int J Syst Evol Microbiol 2013; 63:4350-4353. 🇨🇿
- ⏰ According to Nouioui et al. (2018), this species is an earlier heterotypic synonym of Bifidobacterium stercoris Kim et al. 2010. Publication: Nouioui I, Carro L, Garcia-Lopez M, Meier-Kolthoff JP, Woyke T, Kyrpides NC, Pukall R, Klenk HP, Goodfellow M, Goker M. Genome-Based Taxonomic Classification of the Phylum Actinobacteria. Front Microbiol 2018; 9:2007. 🇩🇪
- ⏰ According to Okuhama et al. (2025), this species is an earlier heterotypic synonym of Bifidobacterium faecale Choi et al. 2014. Publication: Okuhama S, Takahashi H, Nakayama Y, Endo A. Reclassification of Bifidobacterium faecale Choi et al. 2014 as a later heterotypic synonym of Bifidobacterium adolescentis Reuter 1963. Int J Syst Evol Microbiol 2025; 75:6706. 🇯🇵
- 🏢 Synonymy of this taxon was mentioned in an IJSEM list. Publication: Oren A, Garrity GM. List of changes in taxonomic opinion no. 29. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2019; 69:13-32.
- 🏢 Synonymy of this taxon was mentioned in an IJSEM list. Publication: Oren A, Göker M. Notification list. Notification that new names and new combinations have appeared in volume 75, part 3 of the IJSEM. Int J Syst Evol Microbiol 2025; 75:6765.
- 🧬 The phylogenomic assignment score of this taxon is 0.06819 (N = 8).
- 😷 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 2026-08-13. 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 752 times in PubMed until 2026-06-11.
- 🙆 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 genus.
- 🧍 According to Bartlett et al. (2022), this species appears to be part of the gut microflora. 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: Bifidobacterium Orla-Jensen 1924 (Approved Lists 1980)

Assigned by: Reuter G. Vergleichenden Untersuchung über die Bifidus-Flora im Säuglings- und Erwachsenenstuhl. Zentralblatt für Bakteriologie, Parasitenkunde, Infektionskrankheiten und Hygiene. Abteilung I 1963; 191:486-507.

Linking: To permanently link to this page, use https://doi.org/10.83108/rn.774020Link copied to clipboard

Record number: 774020

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Species ***Bifidobacterium* *adolescentis***