CUCURBITACINAS COMO FATOR DE RESISTÊNCIA A INSETOS-PRAGA
2007
Luciano Pacelli Medeiros Macedo | Jerson Vanderlei Carús Guedes | José Francisco Garcia
The 20th century was marked by great discovers, which had a deep impact on plants resistance against pest insects. In this context, high studies were developed about cucurbitacins, an important group of secondary substances produced by plants. These substances are mainly produced by the Cucurbitacea family and act against the insects like allomones, imposing an obstacle to the herbivory. However, some insects, mainly defoliators beetles of the Luperini tribe (Coleoptera: Chrysomelidae), defeated these defenses of the plants and used them as alimentary stimulants and/or in the defense against natural enemies. The action mode of cucurbitacins against the target-insects opens possibilities of its application in the plants breeding, aiming the resistance against insects as well on its utilization in toxic baits or trap cultures.
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