Figure 4.
Transverse sections showing changes in leaves of compatible and incompatible grafts. a Leaf samples at P3. b Cross-section of leaf. c A midrib section was observed and photographs were taken under a light microscope. d Epifluorescence photomicrographs of phloem. e Starch grains were dyed blue. f, g Contents of starch (f) and soluble sugars (g). h Transcript abundance changes of starch and sucrose metabolism pathways. Asterisks represent significant differences compared with the control (**P < .01), analyzed using Student’s t-test. Heatmap shows the log10 (FPKM + .01) of selected differentially expressed transcripts. Black arrows indicate parenchyma cells and red arrows indicate starch accumulation in c and e.