Name: Methanogenium marisnigri Romesser et al. 1981

Category: Species

Proposed as: sp. nov.

Etymology: ma.ris.ni’gri. L. neut. n. mare (gen. maris), the sea; L. adj. niger -gra -grum, black; N.L. gen. neut. n. marisnigri, of the Black Sea

Pronunciation, gender: ma-ris-NI-gri, neuter

Type strain: ATCC 35101; DSM 1498; JR1; OCM 56

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: M59134 Analyse FASTA

Effective publication: Romesser JA, Wolfe RS, Mayer F, Spiess E, Walther-Mauruschat A. Methanogenium, a new genus of marine methanogenic bacteria, and characterization of Methanogenium cariaci sp. nov. and Methanogenium marisnigri sp. nov. Arch. Mikrobiol. 1979; 121:147-153.

IJSEM list: Anonymous. Validation list no. 6. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1981; 31:215-218.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym

Correct name: Methanoculleus marisnigri (Romesser et al. 1981) Maestrojuán et al. 1990

Risk group: 1

• Synonyms:

  • Name	Kind
    Methanoculleus marisnigri (Romesser et al. 1981) Maestrojuán et al. 1990	homotypic synonym, validly published under the ICNP

• Notes:
  • ❗ Methanogenium marisnigri 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 Methanogenium.
  • 😷 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. — 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 1 time in PubMed until 2025-06-04.

Parent taxon: Methanogenium Romesser et al. 1981

Assigned by: Romesser JA, Wolfe RS, Mayer F, Spiess E, Walther-Mauruschat A. Methanogenium, a new genus of marine methanogenic bacteria, and characterization of Methanogenium cariaci sp. nov. and Methanogenium marisnigri sp. nov. Arch. Mikrobiol. 1979; 121:147-153.

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Record number: 777887