Name: Photorhabdus luminescens subsp. kayaii Hazir et al. 2004

Category: Subspecies

Proposed as: subsp. nov.

Etymology: ka.ya’i.i. N.L. gen. masc. n. kayaii, of Kaya, to honour Harry K. Kaya for his scientific contributions to the biology of entomopathogenic nematodes and biological control agents

Pronunciation, gender: ka-YA-i-i, feminine

Type strain: 1121; DSM 15194; NCIMB 13951

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AJ560630 Analyse FASTA

Effective publication: Hazir S, Stackebrandt E, Lang E, Schumann P, Ehlers RU, Keskin N. Two new subspecies of Photorhabdus luminescens, isolated from Heterorhabditis bacteriophora (Nematoda: Heterorhabditidae): Photorhabdus luminescens subsp. kayaii subsp. nov. and Photorhabdus luminescens subsp. thracensis subsp. nov. Syst Appl Microbiol 2004; 27:36-42. 🇩🇪

IJSEM list: Euzeby JP. Validation list no. 98. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2004; 54:1005-1006.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym (and not recommended for medical use)

Correct name: Photorhabdus kayaii (Hazir et al. 2004) Machado et al. 2018

Risk group: 1

• Synonyms:

  • Name	Kind
    Photorhabdus kayaii (Hazir et al. 2004) Machado et al. 2018	homotypic synonym, validly published under the ICNP, distinct rank

• Notes:
  • ❗ Photorhabdus luminescens subsp. kayaii is the correct name instead if this subspecies is regarded as a separate subspecies (i.e., if its nomenclatural type is not assigned to another subspecies whose name is validly published, legitimate and not rejected and has priority) within a separate species Photorhabdus luminescens within a separate genus Photorhabdus.
  • 😷 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, note = "n". — 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.
  • 🙅 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as a synonym of the name to be applied to this subspecies. The name is on LoRN because of the recorded risk group of other species in the genus.

Parent taxon: Photorhabdus luminescens (Thomas and Poinar 1979) Boemare et al. 1993

Assigned by: Hazir S, Stackebrandt E, Lang E, Schumann P, Ehlers RU, Keskin N. Two new subspecies of Photorhabdus luminescens, isolated from Heterorhabditis bacteriophora (Nematoda: Heterorhabditidae): Photorhabdus luminescens subsp. kayaii subsp. nov. and Photorhabdus luminescens subsp. thracensis subsp. nov. Syst Appl Microbiol 2004; 27:36-42. 🇩🇪

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Record number: 779541