Name: Ruminococcus hydrogenotrophicus Bernalier et al. 1997

Category: Species

Proposed as: sp. nov.

Etymology: hy.dro.ge.no.tro’phi.cus. Gr. n. hydoor, water; N.L. masc. adj. suff. -genus, race, offspring; N.L. neut. n. hydrogenium, hydrogen, that which produces water; Gr. masc./fem. adj. trophos, one who feeds; N.L. masc. adj. hydrogenotrophicus, one who feeds on hydrogen, referring to the ability of the microorganism to grow with H 2 /CO 2 as energy source

Gender: masculine

Type strain: DSM 10507; JCM 14656; S5a33; S5a36

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AB910751 Analyse FASTA

Effective publication: Bernalier A, Willems A, Leclerc M, Rochet V, Collins MD. Ruminococcus hydrogenotrophicus sp. nov., a new H2/CO2-utilizing acetogenic bacterium isolated from human feces. Arch Microbiol 1996; 166:176-183.

IJSEM list: Anonymous. Validation list no. 61. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1997; 47:601-602.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym

Correct name: Blautia hydrogenotrophica (Bernalier et al. 1997) Liu et al. 2008

Risk group: 1

• Synonyms:

  • Name	Kind
    Blautia hydrogenotrophica (Bernalier et al. 1997) Liu et al. 2008	homotypic synonym, validly published under the ICNP

• Notes:
  • ❗ Ruminococcus hydrogenotrophicus is the correct name instead if this species is regarded as a separate species (i.e., if its nomenclatural type is not assigned to another species whose name is validly published, legitimate and not rejected and has priority) within a separate genus Ruminococcus.
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No". — The risk group for Swiss Confederation has been imported on 2024-02-01. The full classification is: risk group = 1. — The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 1.
  • 🎓 Name mentioned 6 times in PubMed until 2024-03-28.

Parent taxon: Ruminococcus Sijpesteijn 1948 (Approved Lists 1980)

Assigned by: Bernalier A, Willems A, Leclerc M, Rochet V, Collins MD. Ruminococcus hydrogenotrophicus sp. nov., a new H2/CO2-utilizing acetogenic bacterium isolated from human feces. Arch Microbiol 1996; 166:176-183.

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Record number: 780614