Figure 3.

Mutants Deficient in NPR1 Are Insensitive to MeJA- or MeSA-Elicited Increase in HRF.

HRF in Arabidopsis wild-type (wt) or mutant plants exposed to a MeSA- and MeJA-enriched environment. Plants were exposed to MeSA or MeJA for 4 d. Bars represent average HRF fold increase (compared with control) ± sd of three biological repeats, each one consisting of three pots containing 12 to 20 plants. Asterisks indicate significant difference compared mock-sprayed Arabidopsis (P < 0.05). Asterisks indicate a significant difference from control (*P < 0.05 and **P < 0.01). TM, triple mutant.