Name: Dysgonomonas Hofstad et al. 2000

Category: Genus

Proposed as: gen. nov.

Etymology: Dys.go.no’mo.nas. N.L. n. Dysgonic, a type of fermenter; L. fem. n. monas, a monad, unit; N.L. fem. n. Dysgonomonas, a monad from a Dysgonic fermenter

Gender, pronunciation (Latin): feminine (stem: Dysgonomonad-), dys-go-NO-mo-nas

Type species: Dysgonomonas gadei Hofstad et al. 2000

Conduct genome-based taxonomy of genus at TYGS

16S rRNA gene: Analyse FASTA

Valid publication: Hofstad T, Olsen I, Eribe ER, Falsen E, Collins MD, Lawson PA. Dysgonomonas gen. nov. to accommodate Dysgonomonas gadei sp. nov., an organism isolated from a human gall bladder, and Dysgonomonas capnocytophagoides (formerly CDC group DF-3). Int J Syst Evol Microbiol 2000; 50:2189-2195. 🇬🇧

IJSEM list: Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 50, part 6 of the IJSEM. Int J Syst Evol Microbiol 2001; 51:267-268.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Synonyms:

  • Name	Kind
    Indolivaga Takahashi et al. 2026	heterotypic synonym, validly published under the ICNP

• 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.
  • Takahashi et al. 2026 Takahashi K, Hisatomi A, Mori K, Yuki M, Noda S, Hongoh Y, Ohkuma M, Sakamoto M. Reclassification of the genus Dysgonomonas and description of Dysgonomonas reticulitermitis sp. nov. and Viscerimonas tarda gen. nov., sp. nov. from the gut of the subterranean termite Reticulitermes speratus. Int J Syst Evol Microbiol 2026; 76:7031. 🇯🇵
    Notes:
    • ⊖ Emendation accompanied by the removal of 3 species from the genus.
    • ⊕ Emendation accompanied by the proposal of 1 new species in the genus.

• Notes:
  • 🥇 Nomenclatural type of the family "Dysgonomonadaceae" Ormerod et al. 2016. Publication: Ormerod KL, Wood DL, Lachner N, Gellatly SL, Daly JN, Parsons JD, Dal'Molin CG, Palfreyman RW, Nielsen LK, Cooper MA, et al. Genomic characterization of the uncultured Bacteroidales family S24-7 inhabiting the guts of homeothermic animals. Microbiome 2016; 4:36. 🇦🇺
  • 🥇 Nomenclatural type of the family Dysgonomonadaceae García-López et al. 2020. Publication: 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. 🇩🇪
  • 🧕 Krieg et al. (2010) assigned this genus to the family Porphyromonadaceae Krieg 2012. Publication: Krieg NR. Family IV. Porphyromonadaceae fam. nov. In: Krieg NR, Staley JT, Brown DR, Hedlund BP, Paster BJ, Ward NL, Ludwig W, Whitman WB (eds), Bergey's Manual of Systematic Bacteriology, 2nd edn, vol. 4, Springer, New York, 2010, p. 61. 🇺🇸
  • 🙄 This taxon name is occasionally misprinted (or affected by an OCR error) in some sources as: "Disgomonas"; "Disgonomonas"; "Dysgonomons"; "Gonomonas".
  • 🧔 This taxon was discussed in a meeting of a Taxonomic Subcommittee of the ICSP. Publication: Olsen I, Shah HN. International Committee on Systematics of Prokaryotes; Subcommittee on the taxonomy of Gram-negative anaerobic rods. Int J Syst Evol Microbiol 2008; 58:1051-1055. 🇬🇧
  • 🎰 The BRCs most frequently used for deposits in this group are: JCM: 10; DSM: 6; CCUG: 6; CIP: 3; ATCC: 1; HUT: 1; LMG: 1; CSUR: 1; KCTC: 1; CCM: 1.
  • 😷 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 Taiwan has been imported on 2024-11-03. The full classification is: risk group = 1, note = "P650 = v". — 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.

Subdivision:

Number of child taxa with a validly published and correct name: 9
Number of child taxa with a validly published name, including synonyms: 9
Total number of child taxa: 11

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Dysgonomonas alginatilytica Kita et al. 2015	validly published under the ICNP	correct name
    Dysgonomonas capnocytophagoides Hofstad et al. 2000	validly published under the ICNP	correct name
    Dysgonomonas gadei Hofstad et al. 2000	validly published under the ICNP	correct name
    Dysgonomonas hofstadii Lawson et al. 2010	validly published under the ICNP	correct name
    Dysgonomonas macrotermitis Yang et al. 2014	validly published under the ICNP	correct name
    "Dysgonomonas massiliensis" Bilen et al. 2019	not validly published	synonym
    Dysgonomonas mossii Lawson et al. 2002	validly published under the ICNP	correct name
    Dysgonomonas oryzarvi Kodama et al. 2012	validly published under the ICNP	correct name
    Dysgonomonas reticulitermitis Takahashi et al. 2026	validly published under the ICNP	correct name
    Dysgonomonas termitidis Pramono et al. 2015	validly published under the ICNP	correct name
    "Dysgonomonas wimpennyi" Thompson et al. 2012	not validly published	preferred name

Parent taxon: Dysgonomonadaceae García-López et al. 2020

Assigned by: 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. 🇩🇪

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Record number: 517223