Postharvest insect resistance in maize

López-Castillo, L M and Silva-Fernández, S E and Winkler, R and Bergvinson, D and Arnason, J T and García-Lara, S (2018) Postharvest insect resistance in maize. Journal of Stored Products Research (TSI), 77. pp. 66-76. ISSN 0022474X

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One of the main challenges for the 21st century is ensuring global food security. Today, maize is the largest staple crop produced worldwide. Postharvest primary insect pests, especially the maize weevil (Sitophilus zeamais) and the large grain borer (Prostephanus truncatus) cause food-grain losses during storage up to 40% of total production, mainly in developing countries. Alternatives for pest management have been explored, including the implementation of hermetic storage structures and the application of chemical insecticides. Nevertheless, in low-income regions, both strategies are rarely accessible to smallholders. Modern breeding programs have endeavored to develop insect-resistant varieties, which diminish postharvest pest losses. In this review, we report the current status and advances in maize kernel-pest interactions, the bases and mechanisms of kernel resistance and their biotechnological perspectives. We demonstrate that the comprehension of resistance mechanisms has been fundamental for the development of new productive and resistant varieties, representing a sustainable alternative for developing countries. Finally, we analyse the biotechnological perspectives of natural kernel resistance in global food security.

Item Type: Article
Uncontrolled Keywords: Maize, Pest, Weevil, Grain borer, Insect resistance, Mechanism, Bases, Peroxidase, Phenolic, Response, Resistance mechanisms, Biotechnology, Natural kernel resistance, Integrate pest management, IPM, Grain losses
Subjects: Others > Molecular Biology
Others > Cereals
Others > Plant Protection
Others > Food Processing & Technology
Others > Pest Management
Others > Maize
Others > Food Security
Others > Plant Disease
Depositing User: Mr Ramesh K
Date Deposited: 06 Apr 2018 08:10
Last Modified: 06 Apr 2018 08:10
Official URL:
Acknowledgement: This research was supported by the Research NutriOmics Chair Funds CAT-005 from Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias. Special thanks to the external reviewers for providing manuscript revision.
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