Fig. 4

Expression profiles of selected genes along a refined time-course. Total RNAs were extracted from the stems of control plants and from bent stems at different times (0.5, 1, 2, 5, 9, 13, 17, 21 and 24 h) after bending. Changes in the abundance of the transcripts were analysed by qRT-PCR using specific primers (Additional file 4). Fold-changes are quantified in comparison to control plants collected at identical time-points. Plain symbols correspond to a significantly different transcript accumulation in bent plants according to a Mann–Whitney-Wilcoxon test