Diagram represents bisulfite sequencing of a 500-nt region of the top strand of the FWA gene, 219-nt region of the bottom strand of the MEA-ISR region, and 1,028-nt region of the top strand of the SUP gene in different mutant backgrounds. Detailed data supporting the graphical presentation can be found in Table 2 and Fig. 6. For the analysis of FWA and MEA-ISR, the wild-type strain is WS. For the SUP gene, the wild-type strain is clk-st in the Landsberg erecta background. drm1 drm2, cmt3-7, and drm1 drm2 cmt3 mutants are homozygous for the clk-st inverted repeat SUP transgene. Height of the bars represents the percentage of methylation at each site of 15 clones analyzed by bisulfite sequencing.