Figure 6.
BAK1 is involved in pea aphid resistance. A, Elicitors derived from several aphid species trigger up-regulation of PTI marker genes. Bars show the means ± se of target gene expression levels of four biological replicates (n = three per replicate). Asterisks indicate significant differences in aphid-derived extracts compared with water (Student’s t probabilities calculated within GLM) with *P < 0.05. B, Pea aphids do not survive beyond 6 d on Col-0 Arabidopsis. Data show the percentage of aphids alive at a given time point with means ± se of four biological replicates with n = five per replicate. The time point at which 50% of pea aphids are still alive is indicated. C, Pea aphids survive better on Arabidopsis bak1-5 plants. Bars show the percentage of aphids alive between days 3 and 4 with means ± se of six biological replicates with n = five per replicate. Asterisk indicates significant difference in aphid survival (Student’s t probabilities calculated within GLM; n = 30, F1,59 = 5.028; *P = 0.025). [See online article for color version of this figure.]