Evolution of the Flax Cell Wall Composition During Development and after Gravitropism by Synchrotron Fluorescence Imaging

Flax lodging is anissue of great interest for producers due to its economic impact. To betterunderstand its effects at the cell wall and stem scale, new knowledge regardingthe cell wall composition dynamics during cell wall development and after a 90°tilt bending stress is reported. Deep-Ultra Violet fluorescence emission (DUV) dynamicsrecorded at the Synchrotron SOLEIL-DISCO beamline by multichannelautofluorescence imaging is reported for five cellular wall types of flax stemsafter an artificially induced gravitropic reaction. Three flax growthdevelopment stages, namely, the vegetative stage (VS), the fast growth (FG) andthe mature stage (MS), were selected in normal plants, referred to as the controlplants, or in gravitropic-induced response plants, referred to as 90° tiltedplants.