Probable transcription factor. Expressed in the embryo proper and both layers of the integument at 2 days after pollination (DAP). At 3 DAP, strongly expressed in the outer cell layer of the embryo and at lower levels in the integument and the outer endosperm layer (prealeurone layer). From 4 DAP to 6 DAP, expressed in the integument, the scutellar epithelium and embryo axis. Expression stongly decreases from 8 DAP to disappear completely at 10 DAP. Expressed in young seedlings developing roots at the root hair-forming side of epidermal cells. Belongs to the HD-ZIP homeobox family. Class IV subfamily.