Name: Hydrogenimonas Takai et al. 2004

Category: Genus

Proposed as: gen. nov.

Etymology: Hy.dro.ge.ni’mo.nas. N.L. neut. n. hydrogenum, hydrogen (that which produces water, so called because it forms water when exposed to oxygen); from Gr. neut. n. hydôr, water; from Gr. ind. v. gennaô, to produce; L. fem. n. monas, a unit, monad; N.L. fem. n. Hydrogenimonas, hydrogen monad

Gender, pronunciation: feminine (stem: Hydrogenimonad-), hy-dro-ge-NI-mo-nas

Type species: Hydrogenimonas thermophila Takai et al. 2004

Conduct genome-based taxonomy of genus at TYGS

16S rRNA gene: Analyse FASTA

Valid publication: Takai K, Nealson KH, Horikoshi K. Hydrogenimonas thermophila gen. nov., sp. nov., a novel thermophilic, hydrogen-oxidizing chemolithoautotroph within the epsilon-Proteobacteria, isolated from a black smoker in a Central Indian Ridge hydrothermal field. Int J Syst Evol Microbiol 2004; 54:25-32.

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 54, part 1 of the IJSEM. Int J Syst Evol Microbiol 2004; 54:633-634.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

• Emendations:
  • Mino et al. 2023 Mino S, Fukazawa S, Tsuchiya J, McNichol JC, Sievert SM, Yamaki S, Ando Y, Sawabe T. Hydrogenimonas cancrithermarum sp. nov., a hydrogen- and thiosulfate-oxidizing mesophilic chemolithoautotroph isolated from diffuse-flow fluids on the East Pacific Rise, and an emended description of the genus Hydrogenimonas. International Journal of Systematic and Evolutionary Microbiology 2023; 73:0. Oren A, Göker M. Notification list. Notification that new names and new combinations have appeared in volume 73, part 11 of the IJSEM. Int J Syst Evol Microbiol 2024; 74:6213.
    Notes:
    • ⊕ Emendation accompanied by the proposal of 1 new species in the genus.
    • 😢 The terminology used by the authors is in line with many other taxonomic studies and does not negatively affect their main results; some improvements may nevertheless be possible. Using the term "phylogenetic data" (or equivalent) for sequence data is not advocated. Whether taxa can have "members" is debatable. See the LPSN phylogeny page for details.

• Notes:
  • 🥇 Nomenclatural type of the family Hydrogenimonadaceae Waite et al. 2020. Publication: Waite DW, Chuvochina MS, Hugenholtz P. Road map of the phylum Campylobacterota. In: Anonymous NN (eds), Bergey's Manual of Systematics of Archaea and Bacteria., John Wiley & Sons, New York, 2019, p. 1-11.
  • 🥇 Nomenclatural type of the family "Hydrogenimonaceae" Garrity et al. 2004. Publication: Garrity GM, Bell JA, Lilburn TG. Taxonomic Outline of the Procaryotes. Bergey's Manual of Systematic Bacteriology, Second Edition, Release 5.0. Springer-Verlag, New York, 2004.
  • 🥇 Nomenclatural type of the family "Hydrogenimonadaceae" corrig. Garrity et al. 2004. Publication: Garrity GM, Bell JA, Lilburn TG. Taxonomic Outline of the Procaryotes. Bergey's Manual of Systematic Bacteriology, Second Edition, Release 5.0. Springer-Verlag, New York, 2004.
  • 🧕 Garrity et al. (2004) assigned this genus to the family "Hydrogenimonaceae" Garrity et al. 2004. Publication: Garrity GM, Bell JA, Lilburn TG. Taxonomic Outline of the Procaryotes. Bergey's Manual of Systematic Bacteriology, Second Edition., Release 5.0. Springer-Verlag, New York, 2004.
  • 🧔 This taxon was discussed in a meeting of a Taxonomic Subcommittee of the ICSP. Publication: On SLW. International Committee on Systematics of Prokaryotes (ICSP) Subcommittee on the Taxonomy of Campylobacter and related bacteria: minutes of the closed meetings, 17 January and 31 January 2024. Int J Syst Evol Microbiol 2025; 75:6618.
  • 💁 Taxonomists who have recently focused on this group are the corresponding authors of Hatakeyama et al. (2024). Editors in search of reviewers are advised to consider additional criteria such as whether a taxon is covered by one of the ICSP subcommittees.
  • 🎰 The BRCs most frequently used for deposits in this group are: JCM: 4; KCTC: 3; ATCC: 1.
  • 🧍 The neo-Latin noun hydrogenium, cited in the etymology provided by Takai et al. 2004, should be changed to hydrogenum (without i). Publication: Euzeby JP. List of Bacterial Names with Standing in Nomenclature: a folder available on the Internet. Int J Syst Bacteriol 1997; 47:590-592.

Subdivision:

Number of child taxa with a validly published and correct name: 4
Number of child taxa with a validly published name, including synonyms: 4
Total number of child taxa: 4

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Hydrogenimonas cancrithermarum Mino et al. 2023	validly published under the ICNP	correct name
    Hydrogenimonas leucolamina Hatakeyama et al. 2024	validly published under the ICNP	correct name
    Hydrogenimonas thermophila Takai et al. 2004	validly published under the ICNP	correct name
    Hydrogenimonas urashimensis Mino et al. 2021	validly published under the ICNP	correct name

Parent taxon: Hydrogenimonadaceae Waite et al. 2020

Assigned by: Waite DW, Chuvochina MS, Hugenholtz P. Road map of the phylum Campylobacterota. In: Anonymous NN (eds), Bergey's Manual of Systematics of Archaea and Bacteria., John Wiley & Sons (in association with Bergey's Manual Trust), Online, 2019, p. 1-11.

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Record number: 517253