Induced resistance in plants and counter-adaptation by insect pests

    War, A R and Sharma, H C (2014) Induced resistance in plants and counter-adaptation by insect pests. Short views on Insect Biochemistry and Molecular Biology. pp. 1-16.

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    Abstract

    Insect and plants have coevolved for millions of years. Plants respond to herbivory through various morphological, biochemical, and molecular mechanisms to counter/offset the effects of herbivore attack. These defense strategies against herbivores are wide-ranging, highly dynamic, and could be direct and/or indirect. Direct defense affects the herbivore’s growth and development due to antibiosis because of secondary metabolites produced constitutively and/or induced upon infestation by the insect pests. The indirect defense involves the recruitment of natural enemies of the insect pests. The natural enemies (parasitoids and predators) are attracted by the volatiles produced by the plants in response to insect herbivory. The direct and indirect defensive strategies either act separately or in conjunction with each other. However, insects have the ability to adapt to the plant defensive responses through physiological processes, metabolism and behavior to offset the adverse effects of the host plants’ defense systems. This process of defensive responses by the host plants and counter defense by the insect pests results in the breakdown of resistance, and evolution of new populations/biotypes of the insect pests. This co-evolution between the plants and insects poses a major threat for developing crop cultivars with stable resistance to the target pest for pest management.

    Item Type: Article
    Divisions: RP-Dryland Cereals
    CRP: CGIAR Research Program on Dryland Cereals
    Uncontrolled Keywords: Host plant resistance, induced resistance, insect adaptation, secondary metabolites, pest management.
    Subjects: Others > Entomology
    Depositing User: Mr B K Murthy
    Date Deposited: 08 Jan 2015 08:47
    Last Modified: 08 Jan 2015 08:47
    URI: http://oar.icrisat.org/id/eprint/8459
    Official URL:
    Projects: UNSPECIFIED
    Funders: UNSPECIFIED
    Acknowledgement: UNSPECIFIED
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