The peritrophic matrix (PM) is formed by a network of chitin fibrils associated with proteins, glycoproteins, and proteoglycans that lines the insect midgut. It is a physical barrier involved in digestion processes, and protects the midgut epithelium from food abrasion, pathogen infections and toxic materials. Given its fundamental role in insect physiology, the PM represents an excellent target for pest control strategies. Although a number of viral, bacterial and insect chitinolytic enzymes affecting PM integrity have already been tested, exploitation of fungal chitinases has been almost neglected. Fungal chitinases, already in use as fungal phytopathogen biocontrol agents, are known to attack the insect cuticle, but their action on the insect gut needs to be better investigated.

Effects of Trichoderma viride chitinases on the peritrophic matrix of Lepidoptera

Berini, Francesca;CONGIU, TERENZIO;MARINELLI, FLAVIA;TETTAMANTI, GIANLUCA
2016

Abstract

The peritrophic matrix (PM) is formed by a network of chitin fibrils associated with proteins, glycoproteins, and proteoglycans that lines the insect midgut. It is a physical barrier involved in digestion processes, and protects the midgut epithelium from food abrasion, pathogen infections and toxic materials. Given its fundamental role in insect physiology, the PM represents an excellent target for pest control strategies. Although a number of viral, bacterial and insect chitinolytic enzymes affecting PM integrity have already been tested, exploitation of fungal chitinases has been almost neglected. Fungal chitinases, already in use as fungal phytopathogen biocontrol agents, are known to attack the insect cuticle, but their action on the insect gut needs to be better investigated.
Lepidoptera; fungal chitinases; insect midgut; peritrophic matrix
Berini, Francesca; Caccia, Silvia; Franzetti, Eleonora; Congiu, Terenzio; Marinelli, Flavia; Casartelli, Morena; Tettamanti, Gianluca
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11383/2021789
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