The present invention relates to a method of concurrently introducing multiple genes into plants and trees is provided. The method includes simultaneous transformation of plants with multiple genes from the phenylpropanoid pathways including 4CL, CAld5H, AldOMT, SAD and CAD genes and combinations thereof to produce various lines of transgenic plants displaying altered agronomic traits. The agronomic traits of the plants are regulated by the orientation of the specific genes and the selected gene combinations, which are incorporated into the plant genome.
 This invention was made with United States government support awarded by the Energy Biosciences Program, United States Department of Energy, and the United States Department of Agriculture research grant numbers USDA 99-35103-7986, USDA 01-03749, and DOE DE-FG02-01ER15179. The United States government has certain rights in this invention.