Figure 5. Indirect defenses of VOCos/VOCwt-exposed lima bean plants in greenhouse conditions.

Uninfested plants were placed 30 or 60 cm apart from NtOS2 (VOCos) or WT (VOCwt) in a greenhouse for 7 days. The receiver plants were treated with T. urticae for 1 day and subjected to VOC collections (A) and olfactory assays of predatory mites (B). Asterisks indicate significant differences from control volatiles (Student's t-test, P<0.05). For more information, see Figures 3 and 4.