Provided herein are compositions and methods for producing transgenic plants. In specific embodiments, transgenic plants comprise a construct comprising a polynucleotide encoding CCA1, GLK1 or bZIP1, operably linked to a plant-specific promote, wherein the CCA1, GLK1 or bZIP1 is ectopically overexpressed in the transgenic plants, and wherein the promoter is optionally a constitutive or inducible promoter. In other embodiments, transgenic plants in which express a lower level of CCA1, GLK1 or bZIP1 are provided. Also provided herein are commercial products (e.g., pulp, paper, paper products, or lumber) derived from the transgenic plants (e.g., transgenic trees) produced using the methods provided herein.
This invention was made with U.S. government support under National Institutes of Health Grant ROI GM032877, Department of Energy Grant DEFG02-92ER20071, National Science Foundation Arabidopsis Grant IOB 0519985 (to G.M.C.), and National Science Foundation Grant MCB-0343887 (to C.R.M.). The U.S. government has certain rights in the invention.