FIG 8.

Proposed events underlying evolution of FOL races and AVR genotypes within VCG0030. As in Fig. 7, each box indicates a genotype; the AVR1 genomic region of each isolate is represented schematically within the box, along with sequence types for Avr2 and Avr3. Boxes are colored according to race: green, race 1; blue, race 2; pink, race 3. Colored circles within the boxes indicate geographical locations. Molecular events that led to emergence of new races and genotypes are described in open boxes. We inferred five potential parsimonious evolutionary pathways that lead from the ancestral genotype (thick black box) to the various genotypes observed. These pathways are named A to E, and individual steps are indicated with a number (e.g., A1 is the first step in pathway A). Pathways and steps are indicated in red within the open boxes describing molecular events.