Name: Rikenella Collins et al. 1985

Category: Genus

Proposed as: gen. nov.

Etymology: Ri.ken.el’la. N.L. fem. dim. n. Rikenella, named after the RIKEN-Institute, Japan, where the organisms were originally isolated

Gender: feminine (stem: Rikenell-)

Type species: Rikenella microfusus (Kaneuchi and Mitsuoka 1978) Collins et al. 1985

Conduct genome-based taxonomy of genus at TYGS

16S rRNA gene: Analyse FASTA

Effective publication: Collins MD, Shah HN, Mitsuoka T. Reclassification of Bacteroides microfusus (Kaneuchi and Mitsuoka) in a new genus Rikenella, as Rikenella microfusus comb. nov. Syst. Appl. Microbiol. 1985; 6:79-81.

IJSEM list: Anonymous. Validation list no. 18. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1985; 35:375-376.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

• Emendations:
  • García-López et al. 2019 Garcia-Lopez M, Meier-Kolthoff JP, Tindall BJ, Gronow S, Woyke T, Kyrpides NC, Hahnke RL, Goker M. Analysis of 1,000 Type-Strain Genomes Improves Taxonomic Classification of Bacteroidetes. Front Microbiol 2019; 10:2083. Oren A, Garrity GM. List of changes in taxonomic opinion no. 32. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2020; 70:4061-4090.

• Notes:
  • Nomenclatural type of the family Rikenellaceae Krieg et al. 2012. Publication: Krieg NR, Staley JT, Brown DR, Hedlund BP, Paster BJ, Ward NL, Ludwig W, Whitman WB. Family III. Rikenellaceae fam. nov. In: Krieg NR, Staley JT, Brown DR, Hedlund BP, Paster BJ, Ward NL, Ludwig W, Whitman WB (eds), Bergey's Manual of Systematic Bacteriology, 2nd edn, vol. 4, Springer, New York, 2010, p. 54.
  • The type species of this genus has alternatively been placed in the genus Bacteroides Castellani and Chalmers 1919 (Approved Lists 1980). Publication: Kaneuchi C, Mitsuoka T. Bacteroides microfusus, a new species from the intestines of calves, chickens, and Japanese quails. International Journal of Systematic Bacteriology 1978; 28:478-481.
  • This taxon name is occasionally misprinted in some sources as: "Hikenella"; "Rikcnella"; "Rileenella"; "Rilzenella".
  • This taxon was discussed in a meeting of a Taxonomic Subcommittee of the ICSP. Publication: Olsen I, Shah HN. International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Gram-negative anaerobic rods. Int J Syst Evol Microbiol 2001; 51:1943-1944.
  • This taxon was discussed in a meeting of a Taxonomic Subcommittee of the ICSP. Publication: Olsen I, Shah HN. International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Gram-negative anaerobic rods. Minutes of the meeting, 29 July 2002, Paris, France. Int. J. Syst. Evol. Microbiol. 2003; 53:923-924.
  • This taxon was discussed in a meeting of a Taxonomic Subcommittee of the ICSP. Publication: Olsen I, Shah HN. International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Gram-negative anaerobic rods. Minutes of the meetings, 9 and 10 July 2000, Manchester, UK. Int. J. Syst. Evol. Microbiol. 2001; 51:1943-1944.
  • The BRCs most frequently used for deposits in this group are: CCUG: 1; DSM: 1; JCM: 1; ATCC: 1; NCTC: 1.
  • Pittman et al. (1991) suggested the abbreviation "RKNL" for this genus name but this does not appear to be of practical relevance any longer. Publication: Pittman KF, Walczak CA, Lock CM. Codes and abbreviations for approved of effectively published names of genera of bacteria published from January 1980 to December 1990. Int J Syst Bacteriol 1991; 41:571-579.

Subdivision:

Number of child taxa with a validly published and correct name: 1
Number of child taxa with a validly published name, including synonyms: 1
Total number of child taxa: 2

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    "Candidatus Rikenella faecigallinarum" Gilroy et al. 2021	not validly published
    Rikenella microfusus (Kaneuchi and Mitsuoka 1978) Collins et al. 1985	validly published under the ICNP	correct name

Parent taxon: Rikenellaceae Krieg et al. 2012

Assigned by: Krieg NR, Staley JT, Brown DR, Hedlund BP, Paster BJ, Ward NL, Ludwig W, Whitman WB. Family III. Rikenellaceae fam. nov. In: Krieg NR, Staley JT, Brown DR, Hedlund BP, Paster BJ, Ward NL, Ludwig W, Whitman WB (eds), Bergey's Manual of Systematic Bacteriology, 2nd edn, vol. 4, Springer, New York, 2010, p. 54.

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Record number: 516491