Phylogenomic analysis supports the reclassification of Burkholderia novacaledonica as Caballeronia novacaledonica comb. nov.

Burkholderia novacaledonica is a Betaproteobacterial species isolated from ultramafic soils in New Caledonia. The characteriza-tion and classification of this species into the Burkholderia genus was done simultaneously with the proposal of the new genus Caballeronia, initially composed of closely related Burkholderia glathei- like species. Thereafter, some reports based on the use of phylogenetic marker genes suggested that B. novacaledonica forms part of Caballeronia genus. Lacking a formal validation, and with the availability of its genome sequence, a genome- based phylogeny of B. novacaledonica was obtained to unravel its taxo-nomic position in Burkholderia sensu lato. A partial gyrB gene phylogeny, extended multilocus sequence typing on homologous protein sequences, and genomic distance- based phylogeny, all support the placement of this species in the Caballeronia genus. Therefore, the reclassification of B. novacaledonica to Caballeronia novacaledonica comb. nov. is proposed.