Quercetin-enhanced fungicide efficacy for agricultural applications
Quercetin, a plant flavonol, enhances the efficacy of triazole and SDHI fungicides, improving their effectiveness against resistant fungal pathogens. This research explores quercetin's potential as a broad-spectrum fungicide potentiator, offering a natural solution to overcome fungicide resistance.
Overview
Quercetin, a naturally occurring plant flavonol, has demonstrated potential to enhance the efficacy of triazole and SDHI fungicides, commonly used in agriculture to combat fungal pathogens. While quercetin alone is not antifungal at environmental levels, its combination with fungicides can induce cell death in resistant fungi, disrupt mitochondrial respiration, and inhibit sterol biosynthesis. This positions quercetin as a promising broad-spectrum fungicide potentiator, capable of overcoming fungicide resistance and improving crop protection.
Technical specifications
Key features:
- Enhances triazole fungicide efficacy by inhibiting CYP51-mediated sterol biosynthesis
- Disrupts mitochondrial function, overlapping with SDHI fungicide target sites
- Synergizes with fungicides to induce apoptosis in resistant fungal strains
- Tested against agriculturally relevant fungi such as Candida, Fusarium, and Aspergillus
Mechanism of action:
- Alters expression of CYP51 and other cytochrome P450 enzymes, enhancing fungicide sensitivity
- Disrupts mitochondrial respiration, affecting energy production pathways in fungi
- Modulates quorum sensing and farnesol production, contributing to fungicide synergy
Technology readiness level
This technology is currently at TRL 2, indicating that the concept has been formulated and initial research has begun. Ongoing validation includes standardized checkerboard assays to evaluate synergy, as well as biochemical and gene expression analyses to understand the mechanisms of potentiation.
About University of Illinois, Urbana-Champaign
The University of Illinois Urbana‑Champaign is a flagship public research university with large‑scale research capacity and a broad academic portfolio. An on‑campus Research Park co‑locates corporate R&D teams and startups with faculty, while the National Center for Supercomputing Applications provides advanced computing and data capabilities for collaboration. Integration with a regional health system and an engineering‑based college of medicine enables clinical translation, and a long‑standing extension network links campus innovation to partners statewide. Research is supported by competitive federal funding from NSF, NIH, DOE, USDA, and DoD. A technology transfer office streamlines IP, licensing, and startups, complemented by incubators and prototyping in the Research Park.
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