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Removal of SA by expression of NahG restores growth to HCT-RNAi Arabidopsis, but interference with SA signaling does not. Plants are F2 progeny of the crosses NahG × HCT-RNAi and npr1-1 × HCT-RNAi. (A) Plant phenotypes. (B) SA levels. (C) Transcript levels of HCT, PR5, PR1, and PR2 as determined by qRT-PCR. (D) Rosette diameters and plant height. Results are means ± SD of three biological replicates (each a pool of three plants of the same genotype).
