Name: Leifsonia naganoensis Suzuki et al. 2000

Category: Species

Proposed as: sp. nov.

Etymology: na.ga.no.en’sis. N.L. fem. adj. naganoensis, referring to the Nagano Prefecture, Japan [the source of soil sample from which the type strain was isolated] [probably better: naganonensis]

Pronunciation (Latin), gender: le͡if-SO-ni-a na-ga-no-EN-sis, feminine

Type strain: CCUG 51931; CIP 106799; DB103; DSM 15166; JCM 10592; NBRC 103131

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AB028941 Analyse FASTA

Effective publication: Suzuki KI, Suzuki M, Sasaki J, Park YH, Komagata KK. Leifsonia gen. nov., a genus for 2,4-diaminobutyric acid-containing actinomycetes to accommodate "Corynebacterium aquaticum" Leifson 1962 and Clavibacter xyli subsp. cynodontis Davis et al. 1984. J Gen Appl Microbiol 1999; 45:253-262. 🇯🇵

IJSEM list: Anonymous. Validation list no. 75. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2000; 50:1415-1417.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name (and explicitly recommended for medical use)

Risk group: 1

• Notes:
  • 🧬 The phylogenomic assignment score of this taxon is 0.29360 (N = 43).
  • 😷 The risk group for Germany has been imported on 2026-08-13. 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 5 times in PubMed until 2026-06-11.
  • 🙆 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as the name to be applied to this species. The name is on LoRN because of the recorded risk group of other species in the genus.

Parent taxon: Leifsonia Evtushenko et al. 2000

Assigned by: Suzuki KI, Suzuki M, Sasaki J, Park YH, Komagata KK. Leifsonia gen. nov., a genus for 2,4-diaminobutyric acid-containing actinomycetes to accommodate "Corynebacterium aquaticum" Leifson 1962 and Clavibacter xyli subsp. cynodontis Davis et al. 1984. J Gen Appl Microbiol 1999; 45:253-262. 🇯🇵

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Record number: 777462