Abstract:
Jasmonates are the main signals in plant defence against herbivores,
also being new weapons in plant defences. Oral secretions of insects are
molecular patterns that trigger tritrofic relationships plant-pest-
entomophagous, by releasing volatile. Priming plant by influence of volatile or
internal signals produced by jasmonates, provides an increased resistance to
pest attack. Only molecular approach in fundamental researches and in the
management of the pests, assures knowledge of life phenomenology between
plant and insect.