Name: "Microcyclus major" Gromov 1963

Category: Species

Proposed as: sp. nov.

Etymology: ma’jor. L. comp. masc./fem. adj. maior, larger; L. comp. masc. adj. major, larger (comp. of magnus) [probably better: maior]

Pronunciation, gender: MA-jor, masculine

Nomenclatural type: ATCC 29496; DSM 103; LMG 13163; VKM B-859

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: M62787 Analyse FASTA

Original publication: Gromov BV. A new bacterium of the genus Microcyclus. Doklady Akademii Nauk SSSR 1963; 152:733-734.

Nomenclatural status: not validly published, basonym of name in Approved Lists

Taxonomic status: synonym (and no standing)

Correct name: Flectobacillus major (Gromov 1963) Larkin et al. 1977 (Approved Lists 1980)

Risk group: 1

• Synonyms:

  • Name	Kind
    Flectobacillus major (Gromov 1963) Larkin et al. 1977 (Approved Lists 1980)	homotypic synonym, validly published under the ICNP

• Notes:
  • 😷 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". — 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.

Parent taxon: Microcyclus Ørskov 1928 (Approved Lists 1980)

Assigned by: Gromov BV. A new bacterium of the genus Microcyclus. Doklady Akademii Nauk SSSR 1963; 152:733-734.

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Record number: 778140