Fig. 2.

Effect of a prior thrips infestation or exogenous application of MeJA in wild-type (wt) and def-1 plants on thrips preference, 12 d after the initial treatment, as tested in a dual-choice leaf disc assay. Percentage (± SEM, n = 25–35) of thrips settled on leaf discs taken from non-infested vs. thrips-infested wt plants, non-infested vs. thrips-infested def-1 plants, mock-treated vs. MeJA-treated wt plants and mock-treated vs. MeJA-treated def-1 plants in two replicated experiments (A, B). Averaged preference data recorded at 0.5, 1, 2, 3 and 4 h after thrips release are shown. Data were analyzed by Wilcoxon matched-pairs signed-rank test. Asterisks denote significant differences at P ≤ 0.05.