The invention includes an isolated DNA encoding a plant GS-X pump polypeptide and an isolated preparation of a plant GS-X pump polypeptide. Also included is an isolated preparation of a nucleic acid which is antisense in orientation to a portion or all of a plant GS-X pump gene. The invention also includes a cells, vectors and transgenic plants having an isolated DNA encoding a plant GS-X pump and methods of use thereof. In addition, the invention relates to plant GS-X pump promoter sequences and the uses thereof.
This invention was supported in part by funds from the U.S. Government (USDA NRICPG Grant Numbers 9303007 and 9503007 and Department of Energy Grant Number DE-FGO2-91ER20055) and the U.S. Government may therefore have certain rights in the invention.