Arabidopsis/enzymology; Methyltransferases/genetics; Plant Proteins/metabolism; Transcription Factors/genetics; Transcription Factors/metabolism; Zea mays/enzymology; Amino Acid Sequence; Arabidopsis/genetics; Arabidopsis/metabolism; Down-Regulation/genetics; Gene Expression Regulation, Enzymologic/genetics; Gene Expression Regulation, Plant/genetics; Green Fluorescent Proteins/genetics; Green Fluorescent Proteins/metabolism; Lignin/metabolism; Methyltransferases/metabolism; Microscopy, Fluorescence; Molecular Sequence Data; Phenotype; Phylogeny; Plant Proteins/genetics; Plants, Genetically Modified; Promoter Regions, Genetic/genetics; Protein Isoforms/genetics; Protein Isoforms/metabolism; Reverse Transcriptase Polymerase Chain Reaction; Sequence Homology, Amino Acid; Stress, Mechanical; Zea mays/genetics; Zea mays/metabolism