The Aphid-Transmitted Differentially Affects Volatiles Emission and Subsequent Vector Behavior in Two Plants.

Aphids are important pests which cause direct damage by feeding or indirect prejudice by transmitting plant viruses. Viruses are known to induce modifications of plant cues in ways that can alter vector behavior and virus transmission. In this work, we addressed whether the modifications induced by the aphid-transmitted (TuYV) in the model plant also apply to the cultivated plant , both belonging to the family. In most experiments, we observed a significant increase in the relative emission of volatiles from TuYV-infected plants. Moreover, due to plant size, the global amounts of volatiles emitted by were higher than those released by . In addition, the volatiles released by TuYV-infected attracted the TuYV vector more efficiently than those emitted by non-infected plants. In contrast, no such preference was observed for . We propose that high amounts of volatiles rather than specific metabolites are responsible for aphid attraction to infected . This study points out that the data obtained from the model pathosystem /TuYV cannot be straightforwardly extrapolated to a related plant species infected with the same virus.