Extended Data Figure 10: med5a/5b ref8-1 mutants show elevated levels of salicylic acid and disruption of SID2 does not rescue the stunted growth of the ref8-1 mutant.

a, Shown is the quantification of salicylic acid in 3-week-old rosettes of plants of the indicated genotypes. Data for each genotype are derived from three independently pooled samples representing 300 mg of whole rosette tissue each. Error bars represent s.d. **P < 0.01, difference from wild type (Student’s t-test). b, Shown are 3-week-old rosettes of representative plants of the indicated genotypes. The SID2 gene encodes the salicylic acid biosynthetic enzyme isochorismate synthase. The sid2-4 and ref8-1 sid2-4 plants shown are representative progeny of a single plant with the genotype sid2-4/sid2-4 REF8-1/ref8-1 that gave rise to both morphologically normal and dwarfed plants at a ratio of 3:1. N = 167 morphologically normal, 50 dwarfed; χ² = 0.444, P = 0.502.