Name: Pseudomonas chlororaphis subsp. phenazini Chi et al. 2026

Category: Subspecies

Proposed as: subsp. nov.

Etymology: phe.na.zi’ni. N.L. gen. neut. n. phenazini, of phenazine, referring to the ability to produce phenazine [probably better: phenazinae]

Pronunciation (Latin), gender: pse͡u-DO-mo-nas k^hlo-RO-ra-p^his p^he-na-ZI-ni, feminine

Type strain: CFBP 9180; LMG 33497; S1Bt23

Conduct genome-based taxonomy at

16S rRNA gene: MH463705 Analyse FASTA

Effective publication: Chi SI, Akuma M, Xu R, Plante V, Hadinezhad M, Tambong JT. Phenazines are involved in the antagonism of a novel subspecies of Pseudomonas chlororaphis strain S1Bt23 against Pythium ultimum. Sci Rep 2024; 14:20517. 🇨🇦

IJSEM list: Oren A, Göker M. Validation list no. 227. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2026; 76:6989.

Nomenclatural status: validly published under the ICNP

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

• Notes:
  • 🧬 The phylogenomic assignment score of this taxon is 0.13449 (N = 4).
  • 🙆 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as 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: Pseudomonas chlororaphis (Guignard and Sauvageau 1894) Bergey et al. 1930 (Approved Lists 1980)

Assigned by: Chi SI, Akuma M, Xu R, Plante V, Hadinezhad M, Tambong JT. Phenazines are involved in the antagonism of a novel subspecies of Pseudomonas chlororaphis strain S1Bt23 against Pythium ultimum. Sci Rep 2024; 14:20517. 🇨🇦

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Record number: 70445