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Plants can detect insect attacks by 'sniffing' each other's aromasFragrant aromas from plants can actually be a response to attacks by insects, and can alert neighbours to an attack or summon the insects’ predators. Now, scientists are deciphering these secret codes to develop better, greener chemicals to defend crops against herbivorous insects.
Plants have nowhere to run from their enemies - flying, crawling and jumping insects want to eat them alive. But plants are not defenceless. They deploy chemical toxins to deter insects. These can make the plant taste bitter, inhibit the herbivore’s digestive enzymes, disrupt their metabolism or poison them.
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