Figure 2. Trehalose application promotes tomato defense against GPA. (A) Starch content in trehalose-treated tomato leaves. Starch content was measured in leaves of tomato variety Motelle 12 h after infiltration of 10 µM Trehalose (T) and as control with water (W). (B) Trehalose application enhances resistance against GPA. No-choice assay: GPA numbers (adults + nymphs) on plants of the tomato variety Motelle infiltrated with 10 µM Trehalose (T) and as control with water (W), 12 h prior to release of 25 adult aphids per plant. Aphid numbers were taken at 2 dpi (n = 5). In A and B, error bars represent SE.