Fig. 1.

Zeocin response of myb3r mutants. a Seedlings of WT and myb3r mutants. Five-day-old seedlings were transferred to medium with 2 µM zeocin and grown for 6 days. Scale bar, 1 cm. b Root growth of WT and myb3r mutants. Five-day-old seedlings were transferred to medium with or without 2 µM zeocin, and root length was measured for 6 days. c Meristem size of WT and myb3r mutants. Five-day-old seedlings were transferred to medium with different concentrations of zeocin, and cortex cell number between the quiescent centre and the first elongated cell was counted after 24 h. Data are presented as mean ± SD (n = 30). Significant differences from WT were determined by Student’s t-test: *P < 0.05; ***P < 0.001