Fig. 4.

Effects of the des5 mutation on starchy endosperm cell morphology. (a, b) Whole seed micrographs of wt (a) and des5 (b) seeds. des5 seeds show an arrest in cellularization. The large central vacuole, in addition to the reduced cellularization, leads to the shrunken apperance. (c, d) Starchy endosperm cells of wt and des5. (d) des5 cells show an altered composition. (e, f) Starch granules of wt and des5 mutant. (f) des5 starchy endosperm cells have a reduced amount and altered composition of A- and B-type starch granules (f) compared to wt (e). Scale bars indicate 200 μm (a, b), 30 mm (d, e), and 10 mm (c, f).