Digestive proteolytic and amylolytic activities in Trogoderma granarium Everts (Dermestidae: Coleoptera)

Digestive proteolytic and amylolytic activities of Helicoverpa armigera in response to feeding on different soybean cultivars

“…A possible strategy to control insect pests is to produce crops with elevated levels of endogenous resistance. One such approach has been to overexpress plant proteins that are known to play a role in plant defence against herbivores 7. Many plants respond to insect feeding by the synthesis of protease inhibitors (PIs) 8.…”

Biochemical characterisation of digestive proteases and carbohydrases of the pistachio fruit hull borer,Arimania komaroffiRagonot (Lepidoptera: Pyralidae)

“…Haemoglobin is generally used as a substrate for detecting total proteolytic activity (Cohen 1993;Elpidina et al 2001;Hosseininaveh et al 2007). Our data show that proteases from the midgut extract from A. komaroffi adults are capable of hydrolysing such a substrate.…”

Molecular and biochemical characterisation of a dual proteolytic system in vine weevil larvae (Otiorhynchus sulcatus Coleoptera: Curculionidae)

“…It is possible that vine weevil gut proteolysis shifts from predominantly serine protease-based to predominantly cysteine protease-based as the insect develops from larva to adult. Changes in digestive proteases have been reported in other insects in response to dietary inhibitors (Bown et al, 2004) and during development (Hosseininaveh et al, 2007). In vine weevil, the larvae feed exclusively and extensively on plant roots, whilst adults feed on leaves resulting mainly in cosmetic damage.…”