Figure 7.

Changes in the Cellular Structure of the Nucellar Projection Is Associated with Repression of jekyll.

(A) Cross section of the nucellar projection of a 12-DAF wild-type caryopsis. The basal region adheres to the vascular tissue and is visible as one layer of small dense cytoplasmic cells (type I) traced in blue. One to two layers of elongated cells (type II) are in yellow. Transfer cells (type III), distinguished by maximal expansion along the radial axis, are in turquoise. Autolysing cells (type IV) and the cell debris region occupy the endosperm cavity and are shown in violet/red.

(B) to (D) The nucellar projection of transgenic lines N18, N61, and N91 at 12 DAF. The relative distribution of the corresponding regions of transgenic caryopses is represented by color bars (below). Bar = 200 μm.

e, endosperm; ec, endospermal cavity; ne, nucellar epidermis; p, pericarp, vs, vascular tissues.