The invention provides plants having desirable levels of sugar release and/or lignin synthesis. The invention further provides methods of selecting plants with such desirable levels of sugar release and/or lignin synthesis; methods of genetically modifying plants to modulate lignin synthesis, sugar release, and modulating phenylalanine, tyrosine, tryptophan and flavonoid production; and uses of such plants.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
 This disclosure was made with government support under a research project supported by Contract No. DE-AC05-00OR22725 awarded by the U.S. Department of Energy. The government has certain rights in this disclosure.