Inoculation of Arabidopsis leaves and flower buds with Fusarium sporotrichioides. Photographs of mock-treated (A, E, I) and conidial suspension–treated Arabidopsis leaves (B–D, F–H, J–L) at 2 dpi. (E–H) represents magnification of the inner box of panels A–D, respectively. Trypan blue staining of mock-treated leaves (I) and leaves inoculated with F. sporotrichioides (J–L). (M, N) Cross-sections of Trypan blue staining of leaves inoculated with F. sporotrichioides. Arrowheads show the hyphae. Photographs of mock-treated (O) and conidial suspension–treated flower buds (P) at 2 dpi. The scale bars indicate 1 cm (A–D), 1 mm (E–H, O, P), and 100 μm (I–N).