Figure 5. A minority of shared TTE alleles display elevated levels of nucleotide divergence.

Pairwise nucleotide diversity values (π) were calculated between TTE genes shared across multiple strains within each P. syringae groups, color coded by phylogenetic group as in Figure 1, and compared to (π) values for housekeeping gene fragments from these same strains. The solid line indicates a 1∶1 ratio of π values between housekeeping genes and shared TTE. Only effector families with high π values from within phylogenetic groups are labeled.