CRL1- independent auxin-responsive genes expression profiles. Time course of transcription of selected genes in response to IAA treatment (0, 1, 3 or 6 hours) in WT and crl1 mutant stem bases assayed by RT-qPCR. Y-axis indicates the relative expression level at each timepoint relative to timepoint "Ø" (before treatment). Values represent the mean obtained from 3 independent auxin treatment experiments (blue, WT; red, crl1 mutant), bars represent the standard deviation. Mean values obtained at the different timepoints were compared with the corresponding t0 (Ø) mean value. Significant differences were noted with one (p-value < 0.1) or two asterisks (p-value < 0.05). Mean values were compared between WT and crl1 mutant for each timepoint, revealing no significant difference.