Encodes a Myb-related protein similar to CPC. Involved in epidermal cell differentiation. Mutants have reduced numbers of root hairs and increased trichome branching. Involved in endoreduplication. Loss of function mutants are hypertrophic and early flowering.
MYB-type transcription factor involved in epidermal cell fate specification. Acts as a negative regulator of trichome development, including endoreplication, by mediating lateral inhibition. Promotes the formation of hair developing cells in H position in root epidermis, probably by inhibiting non-hair cell formation. May have pleiotropic effects on flowering development and epidermal cell size through the regulation of endoreduplication.