Transcription factor which may be involved in developmental processes. Promotes the development of crown roots (both initiation and elongation), main components of the fibrous root system, by regulating the expression of genes required for crown root development and hormone-responsive genes involved in cytokinin (e.g. RR1, RR2, RR3 and RR4) and auxin (e.g. IAA5, IAA11, IAA23 and IAA31) signaling. Interacts with ERF3. Belongs to the WUS homeobox family.