Figure 5. Effect of inhibitors of cell-cycle progression on the frequency of AtPCNA1 localization patterns.

(a) AtPCNA1 signals in the meristematic zone of roots treated for 24 h with 12 μg/mL aphidicolin (Aph) or 5 nM camptothecin (Cpt). Bar = 50 μm. (b) Frequency of each AtPCNA1 signal pattern in epidermal cells of the root meristematic zone. n ≥ 287 nuclei from 3–5 individual plants. Error bars indicate the SD.