Name: Blautia producta (Prévot 1941) Liu et al. 2008

Category: Species

Proposed as: comb. nov.

Basonym: "Streptococcus productus" Prévot 1941

Etymology: pro.duc’ta. L. fem. part. adj. producta, lengthened, extended

Pronunciation, gender: pro-DUK-ta, feminine

Type strain: ATCC 27340; CCUG 10976; CCUG 9990; DSM 2950; JCM 1471

Conduct genome-based taxonomy at

16S rRNA gene: AB600998 Analyse FASTA

Valid publication: Liu C, Finegold SM, Song Y, Lawson PA. Reclassification of Clostridium coccoides, Ruminococcus hansenii, Ruminococcus hydrogenotrophicus, Ruminococcus luti, Ruminococcus productus and Ruminococcus schinkii as Blautia coccoides gen. nov., comb. nov., Blautia hansenii comb. nov., Blautia hydrogenotrophica comb. nov., Blautia luti comb. nov., Blautia producta comb. nov., Blautia schinkii comb. nov. and description of Blautia wexlerae sp. nov., isolated from human faeces. Int J Syst Evol Microbiol 2008; 58:1896-1902. 🇺🇸

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 58, part 8 of the IJSEM. Int J Syst Evol Microbiol 2008; 58:2473-2474.

Nomenclatural status: validly published under the ICNP

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

Risk group: 2

• Synonyms:

  • Name	Kind
    "Streptococcus productus" Prévot 1941	homotypic synonym, not validly published, basonym of name in Approved Lists
    Ruminococcus productus (Prévot 1941) Ezaki et al. 1994	homotypic synonym, validly published under the ICNP
    Peptostreptococcus productus (Prévot 1941) Smith 1957 (Approved Lists 1980)	homotypic synonym, validly published under the ICNP
    Blautia coccoides (Kaneuchi et al. 1976) Liu et al. 2008	heterotypic synonym, validly published under the ICNP
    Clostridium coccoides Kaneuchi et al. 1976 (Approved Lists 1980)	heterotypic synonym, validly published under the ICNP

• Notes:
  • ⏰ According to Fatahi-Bafghi (2025), this species is an earlier heterotypic synonym of Clostridium coccoides Kaneuchi et al. 1976 (Approved Lists 1980). Publication: Fatahi-Bafghi M. Genome-based reclassification of Blautia coccoides (Kaneuchi et al. 1976) Liu et al. 2008 as a later heterotypic synonym of Blautia producta (Prevot 1941) Liu et al. 2008. Int J Syst Evol Microbiol 2025; 75:6823. 🇮🇷
  • ⏰ According to Fatahi-Bafghi (2025), this species is an earlier heterotypic synonym of Blautia coccoides (Kaneuchi et al. 1976) Liu et al. 2008. Publication: Fatahi-Bafghi M. Genome-based reclassification of Blautia coccoides (Kaneuchi et al. 1976) Liu et al. 2008 as a later heterotypic synonym of Blautia producta (Prevot 1941) Liu et al. 2008. Int J Syst Evol Microbiol 2025; 75:6823. 🇮🇷
  • 🏢 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 7 of the IJSEM. Int J Syst Evol Microbiol 2025; 75:6893.
  • 🧬 The phylogenomic assignment score of this taxon is 0.27562 (N = 76).
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 2, note = "Animal classification RG: 2 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 2". — 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.
  • 🎓 Name mentioned 62 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 risk group of the species itself.
  • 🧍 According to Bartlett et al. (2022), this species was isolated from feces in healthy individuals. Publication: Bartlett A, Padfield D, Lear L, Bendall R, Vos M. A comprehensive list of bacterial pathogens infecting humans. Microbiology (Reading) 2022; 168:0. 🇬🇧
  • 🧍 The genome of the type strain was sequenced as part of the GEBA (Genomic Encyclopedia of Bacteria and Archaea) project. Publication: Mukherjee S, Seshadri R, Varghese NJ, Eloe-Fadrosh EA, Meier-Kolthoff JP, Goker M, Coates RC, Hadjithomas M, Pavlopoulos GA, Paez-Espino D, et al. 1,003 reference genomes of bacterial and archaeal isolates expand coverage of the tree of life. Nat Biotechnol 2017; 35:676-683. 🇺🇸
  • 🧍 See also: Publication: Hauduroy P, Ehringer G, Guillot G, Magrou J, Prévot AR, Rosset A, Urbain A. Dictionnaire des Bactéries Pathogènes, 2nd ed. Masson, Paris, 1953.
  • 🧍 The Latin adjective productus -a -um has several meanings. According to L.D.S. Smith 1957, this epithet means lengthened (i.e. the cells lengthen in culture; see Hauduroy et al. 1953), not produces (sic) as cited in the paper by Liu et al. 2008. Publication: Smith LDS. Genus V. Peptostreptococcus Kluyver and van Niel, 1936,. In: Breed RS, Murray EGD, Smith NR (eds), Bergey's Manual of Determinative Bacteriology, 7th edition, The Williams & Wilkins Co, Baltimore, 1957, p. 533-541.

Parent taxon: Blautia Liu et al. 2008

Assigned by: Liu C, Finegold SM, Song Y, Lawson PA. Reclassification of Clostridium coccoides, Ruminococcus hansenii, Ruminococcus hydrogenotrophicus, Ruminococcus luti, Ruminococcus productus and Ruminococcus schinkii as Blautia coccoides gen. nov., comb. nov., Blautia hansenii comb. nov., Blautia hydrogenotrophica comb. nov., Blautia luti comb. nov., Blautia producta comb. nov., Blautia schinkii comb. nov. and description of Blautia wexlerae sp. nov., isolated from human faeces. Int J Syst Evol Microbiol 2008; 58:1896-1902. 🇺🇸

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Record number: 787483