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

Category: Species

Proposed as: comb. nov.

Basonym: "Microcyclus major" Gromov 1963

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

Gender: masculine

Type strain: 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

Effective publication: Larkin JM, Williams PM, Taylor R. Taxonomy of the genus Microcyclus Ørskov 1928: Reintroduction and emendation of the genus Spirosoma Migula 1894 and proposal of a new genus, Flectobacillus. International Journal of Systematic Bacteriology 1977; 27:147-156.

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

• Synonyms:

  • Name	Kind
    "Microcyclus major" Gromov 1963	homotypic synonym, not validly published, basonym of name in Approved Lists

• Emendations:
  • Hahnke et al. 2016 Hahnke RL, Meier-Kolthoff JP, Garcia-Lopez M, Mukherjee S, Huntemann M, Ivanova NN, Woyke T, Kyrpides NC, Klenk HP, Goker M. Genome-Based Taxonomic Classification of Bacteroidetes. Front Microbiol 2016; 7:2003. Oren A, Garrity GM. List of changes in taxonomic opinion no. 26. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2017; 67:2081-2086.
    Notes:
    • 🧍 The genome of the type strain was sequenced as part of the GEBA (Genomic Encyclopedia of Bacteria and Archaea) project.

• Notes:
  • 🥇 Nomenclatural type of the genus Flectobacillus Larkin et al. 1977 (Approved Lists 1980). Publication: Larkin JM, Williams PM, Taylor R. Taxonomy of the genus Microcyclus Ørskov 1928: Reintroduction and emendation of the genus Spirosoma Migula 1894 and proposal of a new genus, Flectobacillus. International Journal of Systematic Bacteriology 1977; 27:147-156.
  • 😷 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 13 times in PubMed until 2024-03-27.

Parent taxon: Flectobacillus Larkin et al. 1977 (Approved Lists 1980)

Assigned by: Larkin JM, Williams PM, Taylor R. Taxonomy of the genus Microcyclus Ørskov 1928: Reintroduction and emendation of the genus Spirosoma Migula 1894 and proposal of a new genus, Flectobacillus. International Journal of Systematic Bacteriology 1977; 27:147-156.

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Record number: 776283