A tritrophic signal that attracts parasitoids to host-damaged plants withstands disruption by non-host herbivores |
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Authors: | Matthias Erb Nicolas Foresti Ted CJ Turlings |
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Institution: | 1.Laboratory for Fundamental and Applied Research in Chemical Ecology, Institute of Biology,University of Neuchatel,Switzerland |
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Abstract: | Background Volatiles emitted by herbivore-infested plants are highly attractive to parasitoids and therefore have been proposed to be
part of an indirect plant defense strategy. However, this proposed function of the plant-provided signals remains controversial,
and it is unclear how specific and reliable the signals are under natural conditions with simultaneous feeding by multiple
herbivores. Phloem feeders in particular are assumed to interfere with plant defense responses. Therefore, we investigated
how attack by the piercing-sucking cicadellid Euscelidius variegatus influences signaling by maize plants in response to the chewing herbivore Spodoptera littoralis. |
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