cgopt1 -silenced mutants exhibit reduced pathogenicity. Aeschynomene virginica plants were inoculated with spore suspensions of wild-type, Ori51 or Ori83 strains. Spores were collected from plates, counted and diluted in water containing 0.05% Tween 20. Plants were sprayed to runoff and then kept in a humid atmosphere for 16 h. Picture was taken 6 days post-inoculation. Numbers are the mean of average fresh weight and SD of six plants. Data from one experiment are presented. Repetition of experiments led to similar results.