The Arabidopsis NPR1 protein is a key regulator of salicylic acid (SA)-mediated gene expression in systemic acquired resistance. phenotypes much like those of mutants. This dominant-negative effect of the TGA2 mutant demonstrates TGA2 and NPR1 interact in planta. We also present biochemical evidence indicating that this connection is definitely specific and enhanced by SA treatment.… Continue reading The Arabidopsis NPR1 protein is a key regulator of salicylic acid