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

Patricia Claudel (1) , Quentin Chesnais , Quentin Fouché , Celia Krieger (2) , David Halter (1) , Florent Bogaert (1) , Sophie Meyer (1) , Sylvaine Boissinot (1) , Philippe Hugueney (1) , Veronique Ziegler-Graff (2) , Arnaud A. Ameline (3) , Véronique Brault (1)

1 SVQV - Santé de la vigne et qualité du vin
2 IBMP - Institut de Biologie Moléculaire des Plantes
3 EDYSAN - Ecologie et Dynamique des Systèmes Anthropisés - UMR CNRS 7058 UPJV

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 Turnip yellows virus (TuYV) in the model plant Arabidopsis thaliana also apply to the cultivated plant Camelina sativa, both belonging to the Brassicaceae 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 C. sativa were higher than those released by A. thaliana. In addition, the volatiles released by TuYV-infected C. sativa attracted the TuYV vector Myzus persicae more efficiently than those emitted by non-infected plants. In contrast, no such preference was observed for A. thaliana. We propose that high amounts of volatiles rather than specific metabolites are responsible for aphid attraction to infected C. sativa. This study points out that the data obtained from the model pathosystem A. thaliana/TuYV cannot be straightforwardly extrapolated to a related plant species infected with the same virus.

Mots clés: polerovirus; aphids; Brassicaceae

Mots clés: Luteoviridae; volatiles

Domaines: Biologie moléculaire

Patricia Claudel, Quentin Chesnais, Quentin Fouché, Celia Krieger, David Halter, et al.. The Aphid-Transmitted Turnip yellows virus Differentially Affects Volatiles Emission and Subsequent Vector Behavior in Two Brassicaceae Plants.. International Journal of Molecular Sciences, 2018, 19 (5), ⟨10.3390/ijms19082316⟩. ⟨hal-01930967⟩