PROBING THE MOLECULAR NATURE OF THE PSII HERBICIDE BINDING SITE IN ATRAZINE-SUSCEPTIBLE AND ATRAZINE-RESISTANT BRASSICA BIOTYPES

摘要

The phenomenon of resistance of plant species to triazine herbicides has been shown to involve a subtle change in the binding site at the photosystem II (PS II) complex in chloroplast thylakoids. Studies of triazine-resistant weed species suggest that a single amino acid change in the herbicide binding protein Q_B causes the resistance.