ROOT-SPECIFIC PROTEIN INVOLVED IN AUXIN TRANSPORT

摘要

A root-specific plant gene which encodes an auxin-transport carrier protein that is required for gravitropism; an auxin-transport efflux carrier protein; genetically engineered plants whose genomes comprise heterologous DNA encoding a root-specific auxin efflux carrier protein, or heterologous DNA encoding a portion of an auxin efflux carrier protein sufficient to encode a functional carrier protein and to confer a phenotype characterized by a decreased sensitivity to a herbicide which is an auxin derivative, an auxin analogue or a formulation comprising an auxin transport inhibitor in combination with a second herbicide; and methods useful for identifying molecular targets involved in gravitropic signal transduction, for evaluating the effects of agents on auxin transport and for elucidating the role of gene expression and the molecular mechanism of polar auxin transport.