Name: Acetivibrio ethanolgignens Robinson and Ritchie 1981

Category: Species

Proposed as: sp. nov.

Etymology: e.tha.nol.gig’nens. N.L. neut. n. ethanol, ethanol; L. pres. part. gignens, giving birth to, producing; N.L. masc. part. adj. ethanolgignens, producing ethanol

Gender: masculine

Type strain: 77-6; ATCC 33324; DSM 3005; LMG 7055

See detailed strain information at

16S rRNA gene: FR749897 Analyse FASTA

Valid publication: Robinson IM, Ritchie AE. Emendation of Acetivibrio and description of Acetivibrio ethanolgignens, a new species from the colons of pigs with dysentery. Int. J. Syst. Bacteriol. 1981; 31:333-338.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 2

• Synonyms:

  • Name	Kind
    "Acetanaerobacter ethanolgignens" (Robinson and Ritchie 1981) Zou et al. 2021	homotypic synonym, not validly published

• Notes:
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, 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 Swiss Confederation has been imported on 2024-02-01. The full classification is: risk group = 2, note = "PV". — The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 2, note = "t". — 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 7 times in PubMed until 2024-03-28.
  • 🧍 According to Ludwig et al. (2021), this "species affiliates away from the type species and may be classified as a new genus within the Lachnospiraceae". Publication: Ludwig W, Viver T, Westram R, Francisco Gago J, Bustos-Caparros E, Knittel K, Amann R, Rossello-Mora R. Release LTP_12_2020, featuring a new ARB alignment and improved 16S rRNA tree for prokaryotic type strains. Syst Appl Microbiol 2021; 44:126218.
  • 🧍 Yarza et al. (2013) expected for accession FR749897, originating from the alleged type-strain deposit DSM 3005, an affiliation with Ruminococcaceae (Clostridia) but observed an affiliation with Lachnospiraceae (Clostridia) and 82% similarity against Ruminococcus flavefaciens. Publication: Yarza P, Sproer C, Swiderski J, Mrotzek N, Spring S, Tindall BJ, Gronow S, Pukall R, Klenk HP, Lang E, et al. Sequencing orphan species initiative (SOS): Filling the gaps in the 16S rRNA gene sequence database for all species with validly published names. Syst Appl Microbiol 2013; 36:69-73.
  • 🧍 The 16S rRNA gene sequence of the type strain shows an unexpected affiliation with the family Lachnospiraceae (82% similarity against Ruminococcus flavefaciens). Publication: Yarza P, Sproer C, Swiderski J, Mrotzek N, Spring S, Tindall BJ, Gronow S, Pukall R, Klenk HP, Lang E, et al. Sequencing orphan species initiative (SOS): Filling the gaps in the 16S rRNA gene sequence database for all species with validly published names. Syst Appl Microbiol 2013; 36:69-73.

Parent taxon: Acetivibrio Patel et al. 1980

Assigned by: Robinson IM, Ritchie AE. Emendation of Acetivibrio and description of Acetivibrio ethanolgignens, a new species from the colons of pigs with dysentery. Int. J. Syst. Bacteriol. 1981; 31:333-338.

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Record number: 772482