Interaction of insect digestive enzymes with plant protein inhibitors and host-parasite coevolution

Author: Konarev A.V.

Source: Euphytica, Volume 92, Numbers 1-2, 1996 , pp. 89-94(6)

Publisher: Springer

Abstract:

A complex of new approaches was used to study the insect-plant coevolution by using cereal pest digestive \alpha-amylases and proteinases and their proteinaceous inhibitors in cereals. During evolution, plants can weaken the destructive affects of insect hydrolases at the expense of inhibitors in various ways, including (1) increasing the inhibitor activity and heterogeneity, (2) increasing the complexity of an inhibitor set and (3) producing highly specific insect enzyme inhibitors and bifunctional amylase/proteinase inhibitors. Insects, in turn, can decrease the influence of inhibitors by (1) increasing digestive enzyme activities, (2) by modifying a set of related activities of various digestive hydrolases, (3) by decreasing enzyme sensitivity to inhibitors and (4) by destroying inhibitors in guts by proteinases.

Keywords: insects; digestive enzymes; cereals; inhibitors; insect-plant coevolution

Language: English

Document Type: Regular paper

Affiliations: 1: All-Russian Institute for Plant Protection (VIZR), Podbelskogo 3, St. Petersburg-Pushkin, Russia

Publication date: 1996-01-01

• In this: publication
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• In this Subject: Plant Culture ,  Botany
• By this author: Konarev A.V.

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