Breeding strategies to enhance maize resistance to corn stunt disease
A research initiative exploring how modern maize hybrids can regain resistance to corn stunt disease through selective breeding, focusing on restoring defense signaling pathways lost in domestication.
Overview
This research explores the susceptibility of modern maize hybrids to corn stunt disease compared to less domesticated variants. The study hypothesizes that breeding for high yield in modern hybrids has compromised their natural defense mechanisms against pests and pathogens. By investigating the signaling pathways that have been lost during breeding, this project aims to enhance maize's resistance to corn stunt disease through targeted breeding strategies.
Technical specifications
- Direct and indirect defense signaling: Modern hybrids have shown a loss in key signaling capacities for both direct and indirect defense against herbivores like Dalbulus maidis.
- Volatile emission analysis: Landraces emit a volatile blend that deters leafhoppers and attracts parasitoid wasps, a mechanism lost in hybrids.
- Defense hormone profiling: Hormonal and metabolic profiling will be conducted to assess plant defenses post-infestation, using advanced LC-MS/MS systems.
Technology readiness level
The research is currently at Technology Readiness Level 3, involving both laboratory and initial field experiments to validate hypotheses regarding defense signaling and breeding strategies.
About SEMION
Semion is a biotechnology startup founded in 2023 that focuses on restoring natural crop defense mechanisms to combat pests without relying on traditional toxic agrochemicals. The company leverages phytostimulants to activate metabolic pathways in plants, prompting them to release specific odors. These scents serve a dual purpose: they repel harmful insects while simultaneously attracting parasitoids, which are beneficial insects that naturally control pest populations. This approach provides a sustainable alternative to conventional methods such as genetically modified seeds or intensive chemical application.
This technology is designed to address significant agricultural challenges, such as corn stunt disease and citrus greening, which cause substantial global crop losses. By enhancing crop resilience, Semion’s solution aims to increase farmer yields, lower production costs, and improve the safety and health of farm workers by reducing chemical exposure. The company has engaged in field trials to demonstrate the effectiveness of its pest control, with early results indicating significant yield improvements and successful disease management, positioning its products for commercial scaling and wider agricultural application.
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