Figure 5.
DRNL requires a functional GCC box to activate STY1 in planta. A and C, Mock-treated (A) and EST-treated (C) STY1pro:GUS 35Spro:DRNL-ER. B and D, Mock-treated (B) and EST-treated (D) STY1mutpro:GUS 35Spro:DRNL-ER. Activation of DRNL by EST treatment results in thickening of the root and hypocotyls as well as a delay in cotyledon opening (C and D).