A. Overlap of ortholog groups between Pav strains and 24 other P. syringae strains. Numbers inside Venn diagram indicate the number of ortholog groups with ORFs in each of the strains represented. The number in brackets in the central cell indicates the number of ortholog groups with at least one representative in each P. syringae strain (core genes). B. Phylogenetic distribution of top BLAST hits of Pav genes with no orthologs in non-Pav P. syringae strains.