Exploring conservation of cellular-level traits in shade avoidance syndrome among species 5 171 edge layer middle layer 0 50 100 150 200 Pith cell length (um) WL WL+FR ns ns WL WL+FR 0 500 1000 1500 2000 Pith layer thickness (mm) ✱✱✱✱ WL WL+FR 0 5 10 15 20 Pith cell layers ns WL WL+FR 0 50 100 150 Xylem thickness (mm) ns (a) (b) (c) (d) (e) WL WL+FR 0 20 40 60 80 100 Pith cell radial diameter ✱✱ (f) Figure 5.3. Pith and xylem responses to FR treatment in Arabidopsis inflorescence stems. Microscopy analysis results comparing different cell types in 4-week-old Col-0 under LD conditions with 200 PAR R:FR=0.20, specifically focusing on the effects of one week of WL versus WL+FR. (a) Presents a representative picture illustrating various cell types in Col-0, obtained from a crosssection. The study investigated the following aspects: (b) length of pith cells from longitudinal sections, (c) thickness of the pith layer from cross sections, (d) count of pith cell layers from cross sections, (e) pith cell radial diameter from cross section, and (f) thickness of the cambium layer from cross sections. Asterisks in the figure indicate the significance of differences between WL and WL+FR treatments, with the following significance levels: * p≤0.05; ** p≤0.01; *** p≤0.001. Error bars represent the standard error (SE), and the sample size for each measurement is n=40.
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