Response of M. persicae to WT (Col-0), EBF-producing (35S:EBFS; line 11.4 in ref. 22) A. thaliana, and volatiles from these plants. (A) Choice tests; mean ± SEM of n = 25; *P < 0.05, generalized linear model with a binomial error structure. (B) Aphid progeny production; mean ± SEM of n = 10; *P < 0.05, generalized linear model with a Poisson error structure. (C) Aphids reared on Col-0 and EBF-producing (35S:EBFS) plants respond differently to 1 μg synthetic EBF (n = 15; P < 0.05, Fisher exact test). (D) Aphids reared on Col-0 are more repelled by 35S:EBFS than Col-0 volatiles (n = 25; P < 0.05, Fisher exact test). (E) EBFS-reared aphids are less repelled by 35S:EBFS volatiles than Col-0–reared aphids (n = 25; P < 0.05, Fisher exact test).