Researchers Engineer Gene-Switch System Controlled by Sulfonylurea Herbicides

Researchers have engineered a new gene-switch system for field crops that responds to sulfonylurea herbicides by modifying the tetracycline repressor protein. This technology allows for the precise control of gene expression in plants using widely available agricultural chemicals, providing a potential tool for crop management and biotechnology applications.

The study details how scientists repurposed the tetracycline repressor—a protein typically used to regulate gene activity in bacteria—to recognize sulfonylurea herbicides instead of its original target. By altering the protein’s binding site, the team created a molecular switch that activates or deactivates specific genes when these herbicides are applied to the plant. The researchers tested these switches in various crop models to confirm that the system functions reliably under controlled conditions. This development offers a method for farmers and researchers to trigger specific genetic responses in crops by applying standard herbicide treatments, potentially simplifying the regulation of plant traits in field environments.

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Source: GO-AI-ne1

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Date: June 8, 2026

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GOAI