Fig. 5.

Modulation of ARR1 level affects root meristem size. a, b qRT-PCR of SNE (a) and ARR1 (b) expression in 5dpg roots in wild-type and sne-1 background. Error bars indicate standard deviation. Student’s t test; **P < 0.01; ***P < 0.001, n = 3. c, d Root meristems of wild type (c) and sne-1 mutant (d) at 5 dpg. Blue and black arrowheads indicate the QC and the cortex TZ, respectively. e Root meristem cell number of wild type and sne-1 measured over time. Error bars indicate standard deviation. f Root meristem cell number measured at 5dpg of Wt roots, heterozygote SRC/scr-1 and ARR1/arr1-3 roots and homozygote arr1-3 roots. Error bars indicate standard deviation. Student’s t test; *P < 0.05; ***P < 0.001