When faced with a challenge, animals have the ability to physically move away. Plants are not so lucky. Their interactions with the soil prevent them from up-rooting and finding a better place. But this does not mean that plants don't fight back. Indeed, plants produce an astonishing diversity of chemicals to ward off invaders, such as the ubiquitous arthropod pests. Many of these naturally produced chemicals are analogous to manufactured pesticides, in that they provide a strong selective pr...
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