Disease phenotypes after droplet and spray inoculation of 5-week-old Arabidopsis with P. cucumerina spores (10⁶ spores mL⁻¹). A, Disease progression in droplet- and spray-inoculated leaves at different days after inoculation (dai). B, Hyphal colonization and cell death in Trypan Blue-stained leaves at 4 and 7 d after droplet and spray inoculation. Red arrows indicate cell death.