Fig. 1.

Impact of Pieris brassicae eggs on non-flowering and flowering Arabidopsis on P. brassicae larval weight. Larval weight in mg (means ±SE) of larvae after 2 d feeding on previously egg-laden (EF, yellow) or egg-free (F, green) plants in the vegetative (left side) or reproductive stage (right side). Chronological age of plants when treated with eggs: (A) 5 weeks old; (B) 7 weeks old; (C) 9 weeks old, (D, E): 12 weeks old (performance on leaves and flowers); (F) 10 weeks old. (A-E) Plant growth and treatment under short day conditions (8 h/16 h light/dark cycle). (F) Plants grew for 7 weeks under short day conditions and were treated under long day conditions (16 h/8 h light/dark cycle; see Table 1, Exp. 1-6). Statistically significant differences between treatments (***P<0.001) and non-significant differences (‘ns’, P>0.05) are shown, as assessed with Student’s t-test; n=7–10 (plants) per treatment. Statistical details and data for larval weight measurements at different time points are listed in Supplementary Table S3.