Interactions between tomato volatile organic compounds and aphid behaviour

[摘要] In the tritrophic system consisting oftomato, Solanum lycopersicum (L.), the aphid Macrosiphum euphorbiae (Thomas) and its natural enemy, the parasitoid Aphidius ervi (Haliday), it has been shown that the release of volatile organic compounds following aphid attack is responsible for attracting aphid parasitoids in wind tunnel experiments. The main compounds involved in these multitrophic interactions have been characterized and quantified. In this work, the possible activity of such compounds on plant direct defences against the aphid M. euphorbiae was assessed in laboratory tests. The selected compounds were applied to uninfested tomato plants, either by evaporation or contact, and performance ofaphids, in terms ofplant acceptance, fixing behaviour and aphid development, calculated in standard conditions. The results showed that two compounds, namely methyl salicylate and cis-hex-3-en-1-ol, alter aphid performance. These two compounds have been reported to be those eliciting the best response by A. ervi in terms offlight behavior (wind tunnel bioassay) and antennal stimulation (EAG bioassay).

[学科分类] 纳米科学和纳米技术

[关键词] Aphidius ervi;Macrosiphum euphorbiae;direct defences;indirect defences;multitrophic interactions