Name: Methanosarcina barkeri Schnellen 1947 (Approved Lists 1980)

Category: Species

Proposed as: sp. nov.

Etymology: bark’er.i. N.L. gen. masc. n. barkeri, of Barker, named for H.A. Barker, who made many definitive studies of this and other methanogenic bacteria

Gender: feminine

Type strain: ATCC 43569; DSM 800; JCM 10043; MS; NBRC 100474; OCM 38; VKM B-1635

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AB973360 Analyse FASTA

Effective publication: Schnellen CGTP. Onderzoekingen over de methaangisting. Thesis Technical University Delft. De Maasstad, Rotterdam, 1947.

IJSEM list: Skerman VBD, McGowan V, Sneath PHA. Approved lists of bacterial names. Int J Syst Bacteriol 1980; 30:225-420.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Emendations:
  • Bryant and Boone 1987 Bryant MP, Boone DR. Emended description of strain MST (DSM 800T), the type strain of Methanosarcina barkeri. Int. J. Syst. Bacteriol. 1987; 37:169-170.
  • Maestrojuán et al. 1992 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.
    Notes:
    • 🧍 This emendation was not found in the expected IJSEM notification list.

• Notes:
  • 🥇 Nomenclatural type of the genus Methanosarcina Kluyver and van Niel 1936 (Approved Lists 1980). Publication: Kluyver AJ, van Niel CB. Prospects for a natural system of classification of bacteria. Zentralblatt fur Bakteriologie, Parasitenkunde, Infektionskrankheiten und Hygiene. Abteilung II. 1936; 94:369-403.
  • 😷 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 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 515 times in PubMed until 2024-03-27.
  • 🧍 Methanosarcina barkeri Schnellen 1947 (Approved Lists 1980) is the new type species of the genus Methanosarcina Kluyver and van Niel 1936 emend. Barker 1956 (Approved Lists 1980), nom. cons., emend. Mah and Kuhn 1984. Publication: Mah RA, Kuhn DA. Rejection of the type species of Methanosarcina methanica (Approved Lists, 1980), conservation of the genus Methanosarcina with Methanosarcina barkeri (Approved Lists, 1980) as the type species, and emendation of the genus Methanosarcina. Request for an opinion. Int. J. Syst. Bacteriol. 1984; 34:266-267.

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

Assigned by: Schnellen CGTP. Onderzoekingen over de methaangisting. Thesis Technical University Delft. De Maasstad, Rotterdam, 1947.

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Record number: 777927