Pangenome and core genome of twelve strains of P. aeruginosa . The inner plot shows the deviation of GC content of each region above or below the mean GC content of the pangenome. Colored rings show accessory genomic elements of each reference strain. The outer orange ring shows the distribution of core genomic elements along the pangenome. PA14 tRNA gene locations are indicated with tRNA gene names followed by numbers in square brackets in cases of gene interruption by accessory sequence. (Figure format was adapted from Mathee et al. ).