Fig. 3

Prevalence of different forms of type III secretion systems (T3SSs) and phytotoxin biosynthesis genes in each of the P. syringae phylogroups. A given T3SS was considered present if all full-length, core, structural genes of the T3SS were present in the genome, while phytotoxins were considered present if more than half of the biosynthesis genes for a given phytotoxin were present in the genome