Species Flexibacter flexilis

Name: Flexibacter flexilis Soriano 1945 (Approved Lists 1980)

Category, proposed as: species, sp. nov.

Etymology: fle’xi.lis. L. masc. adj. flexilis, pliable, flexible

Pronunciation (Latin), gender: fle-xi-BAK-ter FLE-xi-lis, masculine

Type strain: ATCC 23079; CIP 103988; DSM 6793; IFO 15060; LMG 3989; NBRC 15060

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AB078050 Analyse FASTA

Effective publication: Soriano S. Un nuevo orden de bacterias: Flexibacteriales. Ciencia e Investigacion (Buenos Aires) 1945; 1:92-93.

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

• Emendations:
  • García-López et al. 2019 Garcia-Lopez M, Meier-Kolthoff JP, Tindall BJ, Gronow S, Woyke T, Kyrpides NC, Hahnke RL, Goker M. Analysis of 1,000 Type-Strain Genomes Improves Taxonomic Classification of Bacteroidetes. Front Microbiol 2019; 10:2083. 🇩🇪 Oren A, Garrity GM. List of changes in taxonomic opinion no. 32. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2020; 70:4061-4090.

• Notes:
  • 🥇 Nomenclatural type of the genus Flexibacter Soriano 1945 (Approved Lists 1980). Publication: Soriano S. Un nuevo orden de bacterias: Flexibacteriales. Ciencia e Investigacion (Buenos Aires) 1945; 1:92-93.
  • 😷 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 2026-08-13. 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.
  • 🎓 Name mentioned 3 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 other species in the genus.

Parent taxon: Flexibacter Soriano 1945 (Approved Lists 1980)

Assigned by: Soriano S. Un nuevo orden de bacterias: Flexibacteriales. Ciencia e Investigacion (Buenos Aires) 1945; 1:92-93.

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Record number: 776292