Figure 7.

Scanning Electron Micrographs of Epidermal Protrusions and Unusual Fusion Sutures of Cutinase-Expressing Arabidopsis Plants.

(A) Epidermal protruding ridge (large arrows) in a bent stem segment and fusion between the stem and a leaf (arrowheads) at the distal side of the protrusion. .

(B) Specimen from (A) tilted and enlarged to visualize the two parallel protruding ridges (arrows) along the stem. .

(C) The base of a filament similar to the filament shown in Figure 6A that formed at an epidermal ridge (arrows) protruding along a stem. Of interest are the large cells in the protrusion (arrowheads). .

(D) Organ fusion between two leaves, leading to breakage of the epidermis. At the wound site, mesophyll cells bulged out from the inside of the leaf (arrows). Large tube-like cells lay within the plane of the epidermis close to the suture (arrowheads). .

F, filament; L, leaf; S, stem; U, upper leaf.