Fig. 1

Scanning X-ray microdiffraction data from a longitudinal section of Arabidopsis stem. a Optical image of the stem with the region scanned marked as a blue rectangle. The grid includes three rows and 160 columns, each grid point being 5-microns square, making the grid 800 × 15 microns. A complete microdiffraction pattern was taken at each grid point. b Fiber content, microfibril angle, and axial coherence length as calculated from the diffraction patterns collected by scanning the rectangle in (a) and plotted as a function of position across the stem. Data from all three rows are plotted. c Enlargement of microdiffraction patterns from selected regions of the scan. Selected regions correspond roughly to the cortex, xylem, and close to pith