Fig. 2

Model of the interaction among auxin, CK, SL, and GA in the control of shoot and root formation. A Auxin, cytokinins (CK), and strigolactones (SL) are implicated in the hormonal regulation of BRC1 expression in shoot branching. In this regulation network, Auxin, GA, and SL are suppressors and CK is a stimulator of bud growth. B GA and CK are inhibitors and auxin and SL are activators of root development