FIG 1.

Phylogenetic distribution of P. aeruginosa PAO1 DGC genes among pseudomonads. The unrooted pseudomonad phylogenetic tree was reconstructed using the neighbor-joining method from the concatenated alignment of seven housekeeping genes. The bootstrap support resulting from 100 replicates is indicated by a gray box when ≥90%; larger boxes represent higher bootstrap support (most being at 100%). The presence of an ortholog for each P. aeruginosa PAO1 DGC gene among pseudomonad genomes is indicated by a filled circle, and their absence is indicated by an open circle. Circle color is related to the distribution of the gene, from light yellow (specific to P. aeruginosa genomes) to red (found in all genomes).