The invention provides enzymes that encode O-methyltransferases (OMTs) from Medicago truncatula that allow modification to plant (iso)flavonoid biosynthetic pathways. In certain aspects of the invention, the genes encoding these enzymes are provided. The invention therefore allows the modification of plants for isoflavonoid content. Transgenic plants comprising such enzymes are also provided, as well as methods for improving disease resistance in plants. Methods for producing food and nutraceuticals, and the resulting compositions, are also provided.
The Government may own rights in the invention pursuant to grant from the National Science Foundation Grant No. 0236027 and Grant No. DBI 010973, and a Laboratory Directed Research and Development Award (LDRD) at Brookhaven National Laboratory under contract with the U.S. Department of Energy.