Name: Methanosarcina frisia (Blotevogel et al. 1986) Blotevogel and Fischer 1989

Category: Species

Proposed as: comb. nov.

Basonym: Methanococcus frisius Blotevogel et al. 1986

Etymology: fri’si.a. N.L. fem. adj. frisia, pertaining to Frisia, a region of the Germany

Gender: feminine

Type strain: ATCC 43340; C16; DSM 3318; OCM 98

Conduct genome-based taxonomy at

16S rRNA gene: AY196685 Analyse FASTA

Valid publication: Blotevogel KH, Fischer U. Transfer of Methanococcus frisius to the genus Methanosarcina as Methanosarcina frisia comb. nov. Int. J. Syst. Bacteriol. 1989; 39:91-92. 🇩🇪

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym

Correct name: Methanosarcina mazei corrig. (Barker 1936) Mah and Kuhn 1984

Risk group: 1

• Synonyms:

  • Name	Kind
    Methanococcus mazei Barker 1936 (Approved Lists 1980)	heterotypic synonym, validly published under the ICNP
    Methanosarcina mazei corrig. (Barker 1936) Mah and Kuhn 1984	heterotypic synonym, validly published under the ICNP
    Methanosarcina mazeii (Barker 1936) Mah and Kuhn 1984	heterotypic synonym, inaccurate spelling
    Methanococcus frisius Blotevogel et al. 1986	homotypic synonym, validly published under the ICNP

• Notes:
  • ⏲ According to Mästrojuan et al. (1992), this species is a later heterotypic synonym of Methanosarcina mazeii (Barker 1936) Mah and Kuhn 1984. Publication: Maestrojuán GM, Boone JE, Mah RA, Menaia JAGF, Sachs MS, Boone DR. Taxonomy and halotolerance of mesophilic Methanosarcina strains, assignment of strains to species, and synonymy of Methanosarcina mazei and Methanosarcina frisia. Int. J. Syst. Bacteriol. 1992; 42:561-567. 🇺🇸
  • ⏲ According to Mästrojuan et al. (1992), this species is a later heterotypic synonym of Methanococcus mazei Barker 1936 (Approved Lists 1980). Publication: Maestrojuán GM, Boone JE, Mah RA, Menaia JAGF, Sachs MS, Boone DR. Taxonomy and halotolerance of mesophilic Methanosarcina strains, assignment of strains to species, and synonymy of Methanosarcina mazei and Methanosarcina frisia. Int. J. Syst. Bacteriol. 1992; 42:561-567. 🇺🇸
  • ⏲ According to Mästrojuan et al. (1992), this species is a later heterotypic synonym of Methanosarcina mazei corrig. (Barker 1936) Mah and Kuhn 1984. Publication: Maestrojuán GM, Boone JE, Mah RA, Menaia JAGF, Sachs MS, Boone DR. Taxonomy and halotolerance of mesophilic Methanosarcina strains, assignment of strains to species, and synonymy of Methanosarcina mazei and Methanosarcina frisia. Int. J. Syst. Bacteriol. 1992; 42:561-567. 🇺🇸
  • ❗ Methanosarcina frisia 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 Methanosarcina.
  • 😷 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 2 times in PubMed until 2025-06-04.
  • 🧍 The type strain of Methanosarcina frisia is ATCC 43340, not ATCC 43330 as erroneously cited in the paper by Blotevogel and Fischer 1989. — Tang J. Personal communication, 2002-08-22.

Parent taxon: Methanosarcina Kluyver and van Niel 1936 (Approved Lists 1980)

Assigned by: Blotevogel KH, Fischer U. Transfer of Methanococcus frisius to the genus Methanosarcina as Methanosarcina frisia comb. nov. Int. J. Syst. Bacteriol. 1989; 39:91-92. 🇩🇪

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Record number: 777930