Figure 4.

UVI4 and DEL1 independently control cell cycle exit in the root. A, Representative confocal microscopy images of wild-type (Col-0), uvi4, del1-1, and uvi4 del1-1 one-week-old root meristems stained with propidium iodide. Arrowheads indicate the meristem size based on the cortical cell length. Bar = 50 μm. B, Number of meristematic cortex cells for lines presented in (A). Data represent mean ± se (n > 8, *P < 0.05, Student’s t test). C, Flow cytometric analysis of wild-type (Col-0), uvi4, del1-1, and uvi4 del1-1 one-week-old mutant roots. Data are representative for the mean.