Genus Yokenella

Name: Yokenella Kosako et al. 1985

Category: Genus

Proposed as: gen. nov.

Etymology: Yo.ke.nel’la. N.L. fem. dim. n. Yokenella, named after the Japanese abbreviation “Yoken” that stands for the National Institute of Health, Tokyo, Japan where the new group of organisms was recognized and studied

Gender, pronunciation (Latin): feminine (stem: Yokenell-), yo-ke-NEL-la

Type species: Yokenella regensburgei Kosako et al. 1985

Conduct genome-based taxonomy of genus at TYGS

16S rRNA gene: Analyse FASTA

Effective publication: Kosako Y, Sakazaki R, Yoshizaki E. Yokenella regensburgei gen. nov., sp. nov.: a new genus and species in the family Enterobacteriaceae. Jpn J Med Sci Biol 1984; 37:117-124. 🇯🇵

IJSEM list: Anonymous. Validation list no. 17. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1985; 35:223-225.

Nomenclatural status: validly published under the ICNP, conserved name

Taxonomic status: correct name

Risk group: 2

Synonyms:

Name	Kind
Koserella Hickman-Brenner et al. 1985	heterotypic synonym, validly published under the ICNP

Notes:
- 🚋 The type species of this genus has alternatively been placed in the genus Koserella Hickman-Brenner et al. 1985. Publication: Hickman-Brenner FW, Huntley-Carter GP, Fanning GR, Brenner DJ, Farmer JJ. Koserella trabulsii, a new genus and species of Enterobacteriaceae formerly known as Enteric Group 45. J Clin Microbiol 1985; 21:39-42. 🇺🇸
- 🙄 This taxon name is occasionally misprinted (or affected by an OCR error) in some sources as: "Yakenella"; "Yokanella".
- 🎰 The BRCs most frequently used for deposits in this group are: JCM: 1; CCRC: 1; NCTC: 1; NBRC: 1; CIP: 1; BCRC: 1; ATCC: 1.
- 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 2, note = "Animal classification RG: 1 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 2". — 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.
- 🧍 Conserved name (Judicial Opinion 134). Publication: Arahal et al. Judicial Opinion No. 134. Int J Syst Evol Microbiol 2026; 76:7203.
- 🧍 Pittman et al. (1991) suggested the abbreviation "YOKL" 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.
- 🧍 Priority: IJSB 41:171. Publication: Kosako Y, Sakazaki R. Priority of Yokenella regensburgei Kosako, Sakazaki, and Yoshizaki 1985 over Koserella trabulsii Hickman-Brenner, Huntley-Carter, Brenner, and Farmer 1985. Int. J. Syst. Bacteriol. 1991; 41:171. 🇯🇵
- 🧍 See also: Publication: Wayne LG. JUDICIAL COMMISSION: Minutes of the Meeting, 14 September 1990, Osaka, Japan. Int. J. Syst. Bacteriol. 1991; 41:185-187.

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: 1

Child taxa:

Name	Nomenclatural status	Taxonomic status
Yokenella regensburgei Kosako et al. 1985	validly published under the ICNP, conserved name	correct name

Parent taxon: Enterobacteriaceae Rahn 1937 (Approved Lists 1980)

Assigned by: Kosako Y, Sakazaki R, Yoshizaki E. Yokenella regensburgei gen. nov., sp. nov.: a new genus and species in the family Enterobacteriaceae. Jpn J Med Sci Biol 1984; 37:117-124. 🇯🇵

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Record number: 516948

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Genus Yokenella