Name: Flavonifractor plautii (Séguin 1928) Carlier et al. 2010

Category: Species

Proposed as: comb. nov.

Basonym: Fusobacterium plauti Séguin 1928 (Approved Lists 1980)

Etymology: plaut’i.i. N.L. gen. masc. n. plautii, of Plaut, named for H.C. Plaut, the bacteriologist who first described this organism

Gender: masculine

Type strain: ATCC 29863; CCUG 28093; DSM 4000; Prévot S1; VPI 0310

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AY724678 Analyse FASTA

Valid publication: Carlier JP, Bedora-Faure M, K'ouas G, Alauzet C, Mory F. Proposal to unify Clostridium orbiscindens Winter et al. 1991 and Eubacterium plautii (Seguin 1928) Hofstad and Aasjord 1982, with description of Flavonifractor plautii gen. nov., comb. nov., and reassignment of Bacteroides capillosus to Pseudoflavonifractor capillosus gen. nov., comb. nov. Int J Syst Evol Microbiol 2010; 60:585-590.

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 60, part 3 of the IJSEM. Int J Syst Evol Microbiol 2010; 60:1253-1255.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 2

• Synonyms:

  • Name	Kind
    Fusobacterium plautii corrig. Séguin 1928 (Approved Lists 1980)	homotypic synonym, validly published under the ICNP
    Eubacterium plautii (Séguin 1928) Hofstad and Aasjord 1982	homotypic synonym, validly published under the ICNP
    Clostridium orbiscindens Winter et al. 1991	heterotypic synonym, validly published under the ICNP
    Fusobacterium plauti Séguin 1928 (Approved Lists 1980)	homotypic synonym, inaccurate spelling

• Notes:
  • 🥇 Nomenclatural type of the genus Flavonifractor Carlier et al. 2010. Publication: Carlier JP, Bedora-Faure M, K'ouas G, Alauzet C, Mory F. Proposal to unify Clostridium orbiscindens Winter et al. 1991 and Eubacterium plautii (Seguin 1928) Hofstad and Aasjord 1982, with description of Flavonifractor plautii gen. nov., comb. nov., and reassignment of Bacteroides capillosus to Pseudoflavonifractor capillosus gen. nov., comb. nov. Int J Syst Evol Microbiol 2010; 60:585-590.
  • ⏰ According to Carlier et al. (2010), this species is an earlier heterotypic synonym of Clostridium orbiscindens Winter et al. 1991. Publication: Carlier JP, Bedora-Faure M, K'ouas G, Alauzet C, Mory F. Proposal to unify Clostridium orbiscindens Winter et al. 1991 and Eubacterium plautii (Seguin 1928) Hofstad and Aasjord 1982, with description of Flavonifractor plautii gen. nov., comb. nov., and reassignment of Bacteroides capillosus to Pseudoflavonifractor capillosus gen. nov., comb. nov. Int J Syst Evol Microbiol 2010; 60:585-590.
  • 😷 The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 2.
  • 🎓 Name mentioned 63 times in PubMed until 2024-03-28.
  • 🧍 Flavonifractor plautii (Séguin 1928) Carlier et al. 2010 includes strains previously classified as Clostridium orbiscindens Winter et al. 1991. Publication: Winter J, Popoff MR, Grimont P, Bokkenheuser VD. Clostridium orbiscindens sp. nov., a human intestinal bacterium capable of cleaving the flavonoid C-ring. Int J Syst Bacteriol 1991; 41:355-357.

Parent taxon: Flavonifractor Carlier et al. 2010

Assigned by: Carlier JP, Bedora-Faure M, K'ouas G, Alauzet C, Mory F. Proposal to unify Clostridium orbiscindens Winter et al. 1991 and Eubacterium plautii (Seguin 1928) Hofstad and Aasjord 1982, with description of Flavonifractor plautii gen. nov., comb. nov., and reassignment of Bacteroides capillosus to Pseudoflavonifractor capillosus gen. nov., comb. nov. Int J Syst Evol Microbiol 2010; 60:585-590.

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Record number: 788422