Figure 7.
Strains with low virulence have high host specificity. (A) Estimates of virulence (average lesion area) and host specificity (coefficient of variation) across eight eudicots for the Botrytis strains are shown. The strains are colored according to the plant host from which they were collected. A quadratic relationship was the optimal description of the relationships between specificity and virulence and is shown with a gray confidence interval (R2=0.44, P = 6.36 × 10−13). (B) Mean lesion area and standard error (n = 12, except A. thaliana n = 6) across the eight eudicot species is provided for two strains at the extremes of the host specificity/virulence distribution.