The invention alters the physical characteristics of starch granules in a
plant. Methods are provided for reducing starch granule size by stably
introducing into the genome of the plant or plant cell a DNA construct
comprising a polynucleotide encoding a polypeptide operably linked to a
promoter that drives expression in a plant and operably linked to a
plastid transit peptide. Compositions of the invention include transgenic
plants and seeds having a reduced starch granule size. Compositions also
include starch isolated from these plants and seeds. The modified starch
granules find use in a wide range of food, feed, and industrial
applications.
