M ORFs can trigger nonsense-mediated mRNA decay in a size-dependent manner. Plant Mol. Biol. 71: 367-378. Okita, T.W., and Choi, S.B. (2002). mRNA localization in plants: targeting to the cell's cortical region and beyond. Curr. Opin. Plant Biol. 5: 553-559. Onoue, N., Yamashita, Y., Nagao, N., Goto, d.B., Onouchi, H., and Naito, S. (2011). S-adenosyl-L-methionine induces compaction of nascent pep