Relative mRNA accumulation of genes related to Met synthesis (ATMS1, ATMS2, ATMS3, and CGS) and degradation (SAM-1, SAM-2, SAM-3, and SAM-4) in flowers (A) and siliques (B and C) of wild-type Col-0 and mgl-2 plants. Flowers and siliques of 30-d-old plants were used to extract total RNA and used for real-time quantitative PCR to obtain relative mRNA expression levels. Expression levels of all genes were normalized with respect to the internal control UBQ10. The y axes are in arbitrary units. Note different scales for each y axis. Data are mean ± sd of n = 3 samples. *, P < 0.05, Student's t test.