A Study on the Death of Cells in the Barley Aleurone
The cereal endosperm differentiates into the starchy endosperm and the aleurone layer. As the grain matures all
cells of the starchy endosperm die. The only endosperm cells alive in mature grain are aleurone cells. During
germination and seedling establishment, aleurone cells synthesize and secrete hydrolytic enzymes into the
starchy endosperm to mobilize stored reserves that nourish the growing embryo.