Figure 6.

S. littoralis and P. brassicae Prefer to Feed on the Leaf Margin of GS-Lacking Plants.

(A) Two neonate S. littoralis larvae were placed on a 4-week-old plant and allowed to feed for 36 h. The picture is taken at the end of the feeding period. Arrows indicate feeding sites.

(B) Number of feeding sites on inner and outer leaf blade was scored on each eaten leaf.

(C) Experiment with P. brassicae was done similarly except that one neonate larva was used per plant and feeding time was reduced to 24 h.

Values are the mean (±se) from 28 plants for each A. thaliana genotype. Asterisks indicate statistically significant differences between inner and outer lamina (Student’s t test; *P < 0.05, **P < 0.01, and ***P < 0.001). Experiments were repeated three times independently with similar results.