Figure 6.—
RNAi-mediated downregulation of REF4 transcript accumulation leads to increased sinapoylmalate content in plants carrying semidominant ref4 alleles. (A) The RNAi transgene in a wild-type background causes no change in the sinapoylmalate content as compared to soil-grown plants and plants transformed with the empty vector. (B–D) The expression of a REF4 RNAi transgene in a ref4-1 (B), ref4-2 (C), and ref4-3 (D) background causes an increase in sinapoylmalate content.