CYP78A5 regulates the plastochron non-cell-autonomously in the shoot apex. A, Phenotypes of cyp78a5 plants harboring LAS promoter- or WUS promoter-driven CYP78A5–Venus transgenes. Bar, 2 cm. B, The number of visible true rosette leaves of the transgenic plants described in (A). Plants were grown under short-day conditions for 23 d. Statistical differences were analyzed by one-way ANOVA followed by a Tukey–Kramer multiple comparison tests (P < 0.001). n = 16.