Lethal backfire: Green odour with fatal consequences for voracious caterpillars

Plants have developed a sophisticated defence system. They can not only directly fend off herbivores by producing toxins, but also do so indirectly by emitting odorant molecules into the atmosphere that are perceived by predatory insects; these predators are lured to the attacked plant and feed on the herbivore or parasitise it - thereby providing a benefit for the plant...

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