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Killer Leaves Emerge from Plant-Butterfly Arms Race

Killer Leaves Emerge from Plant-Butterfly Arms Race
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Cabbage Whites Triggered Egg-Killing Leaf Necrosis In Crucifers

Cabbage Whites Triggered Egg-Killing Leaf Necrosis In Crucifers Until now, little was known about how plants protect themselves from plant-eating insects and how the arms race between insects and plants unfolded. Researchers from Wageningen University & Research have gained more insight into this: strong leaf necrosis - the mechanism by which plants detect and kill the eggs of butterflies and other insects on their leaves - emerged almost exclusively in cruciferous plants and their wild relatives that were attacked by cabbage whites who had developed immunity to the plants’ toxic mustard oil. A publication on this subject appeared in the journal New Phytologist.

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