Name: Paraliobacillus ryukyuensis Ishikawa et al. 2003

Category: Species

Proposed as: sp. nov.

Etymology: ry.ukyu.en’sis. N.L. masc./fem. adj. ryukyuensis, from the Ryukyu Islands, Japan, where the type strain was isolated

Gender: masculine

Type strain: DSM 15140; IAM 15001; JCM 21472; NBRC 100001; NRIC 520; O15-7

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AB087828 Analyse FASTA

Effective publication: Ishikawa M, Ishizaki S, Yamamoto Y, Yamasato K. Paraliobacillus ryukyuensis gen. nov., sp. nov., a new Gram-positive, slightly halophilic, extremely halotolerant, facultative anaerobe isolated from a decomposing marine alga. J Gen Appl Microbiol 2002; 48:269-279.

IJSEM list: Euzeby JP. Validation list no. 91. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2003; 53:627-628.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Notes:
  • 🥇 Nomenclatural type of the genus Paraliobacillus Ishikawa et al. 2003. Publication: Ishikawa M, Ishizaki S, Yamamoto Y, Yamasato K. Paraliobacillus ryukyuensis gen. nov., sp. nov., a new Gram-positive, slightly halophilic, extremely halotolerant, facultative anaerobe isolated from a decomposing marine alga. J Gen Appl Microbiol 2002; 48:269-279.
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Animal classification RG: 2 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 2". — The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 1.
  • 🎓 Name mentioned 7 times in PubMed until 2024-03-27.
  • 🧍 According to Ludwig et al. (2021), this "species affiliates within the genus Amphibacillus and may be reclassified". Publication: Ludwig W, Viver T, Westram R, Francisco Gago J, Bustos-Caparros E, Knittel K, Amann R, Rossello-Mora R. Release LTP_12_2020, featuring a new ARB alignment and improved 16S rRNA tree for prokaryotic type strains. Syst Appl Microbiol 2021; 44:126218.
  • 🧍 In the effective publication, the type strain NBRC 100001 is erroneously cited as NBRC 10001. — Leibniz Institute DSMZ. Prokaryotic Nomenclature Up-to-date, 2018-12-11.

Parent taxon: Paraliobacillus Ishikawa et al. 2003

Assigned by: Ishikawa M, Ishizaki S, Yamamoto Y, Yamasato K. Paraliobacillus ryukyuensis gen. nov., sp. nov., a new Gram-positive, slightly halophilic, extremely halotolerant, facultative anaerobe isolated from a decomposing marine alga. J Gen Appl Microbiol 2002; 48:269-279.

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Record number: 779170