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Plants use certain chemical compounds to defend themselves against animals that feed on them. As JONATHAN GERSHENZON explains in this video, dandelions are a very good model to research the defences of plants because they are especially robust. The research team therefore investigated dandelions to identify the compound that protects the roots from being damaged by insects. They studied dandelions from different regions and with different levels of these particular compounds. In a next step they compared the amount of damage after exhibiting them to an insect that feeds on the roots. After altering the plant's production of this compound the researchers found that dandelions with reduced levels of the compound were fed on more heavily by this particular insect.
