Fig. 1: ckrc3 is an auxin-deficient mutant.

a–e Plant phenotypes at 7 DAG (Day after germination) on MS media with or without 0.1 μΜ tZ (bar = 5 mm), quantification results of root length and degree of curling are shown in b–d (seedlings grow on MS in c, d) (n ≥ 20), bar = 5 mm. Data are presented as mean ± SD, **P < 0.01 according to ANOVA followed by Tukey’s multiple comparison tests. e Quantification of root gravitropic responses (n ≥ 50). f, g Rosettes and fresh weight of 30 DAG plant (n = 31). Data are presented as mean ± SD, ***P < 0.001 according to ANOVA followed by Tukey’s multiple comparison tests. h, i GUS staining or GFP fluorescence of DR5::GUS/GFP marker lines, bar = 100 μm. j Primary root length at 7 DAG on MS medium with increasing concentrations of IAA (n ≥ 15). Data are presented as mean ± SD.