Molecular mechanisms, genetic mapping, and genome editing for insect pest resistance in field crops

Wani, S H and Choudhary, M and Barmukh, R and Bagaria, P K and Samantara, K and Razzaq, A and Jaba, J and Ba, M N and Varshney, R K (2022) Molecular mechanisms, genetic mapping, and genome editing for insect pest resistance in field crops. Theoretical and Applied Genetics, 135. pp. 3875-3895. ISSN 1432-2242

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Key message Improving crop resistance against insect pests is crucial for ensuring future food security. Integrating genomics with modern breeding methods holds enormous potential in dissecting the genetic architecture of this complex trait and accelerating crop improvement. Abstract Insect resistance in crops has been a major research objective in several crop improvement programs. However, the use of conventional breeding methods to develop high-yielding cultivars with sustainable and durable insect pest resistance has been largely unsuccessful. The use of molecular markers for identification and deployment of insect resistance quantitative trait loci (QTLs) can fastrack traditional breeding methods. Till date, several QTLs for insect pest resistance have been identified in field-grown crops, and a few of them have been cloned by positional cloning approaches. Genome editing technologies, such as CRISPR/Cas9, are paving the way to tailor insect pest resistance loci for designing crops for the future. Here, we provide an overview of diverse defense mechanisms exerted by plants in response to insect pest attack, and review recent advances in genomics research and genetic improvements for insect pest resistance in major field crops. Finally, we discuss the scope for genomic breeding strategies to develop more durable insect pest resistant crops.

Item Type: Article
Divisions: Center of Excellence in Genomics and Systems Biology
Research Program : Asia
Research Program : West & Central Africa
Uncontrolled Keywords: Molecular mechanisms, genetic mapping, insect pest resistance, field crops
Subjects: Others > Molecular Biology
Others > Genetics and Genomics
Others > Entomology
Depositing User: Mr Nagaraju T
Date Deposited: 04 Oct 2023 03:15
Last Modified: 04 Oct 2023 03:15
Official URL:
Acknowledgement: Open Access funding enabled and organized by CAUL and its Member Institutions. RKV is thankful to International Atomic Energy Agency (IAEA), Bill & Melinda Gates Foundation for supporting research and to Science & Engineering Research Board (SERB) of Department of Science & Technology (DST), Government of India for providing the J C Bose National Fellowship (SB/S9/Z-13/2019). RB acknowledges funding support from the Council of Scientific and Industrial Research (CSIR), Government of India, for the award of a research fellowship.
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