Figure 3.

A, Northern blot showing expression of CAW471 in mRNA extracted from leaf AZs that had been incubated in the presence or absence of ethylene (10 μL L⁻¹) for 0, 24, 48, and 72 h. The same membrane was probed with a 25S rRNA to show equal loading of the RNA. B, Time course of abscission in leaf explants exposed to ethylene (10 μL L⁻¹) for 0, 24, 42, 48, 54, and 60 h.