Lignin Nanoparticles Boosted Tomato Disease Control
Researchers developed a new way to use plant-derived nanoparticles to protect tomatoes from bacterial spot.
Updated on Oct. 14, 2026 in Botany
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World Vegetable Center researchers have successfully used lignin nanoparticles to enhance the effectiveness of beneficial bacteria. This combination significantly reduced bacterial spot disease in greenhouse-grown tomato plants.
Why it matters
Farmers often struggle with the reliability of biological disease controls, which can be degraded by UV light and stress. This method provides a natural way to shield beneficial bacteria, making crop protection more effective and practical.
Experiments at the World Vegetable Center showed that mixing lignin nanoparticles and Bacillus immediately before application provided superior disease control. Lignin particles were synthesized by dissolving powder in an alkaline solution and adjusting pH.
The players
Moitri Santra
She is the researcher who produced the lignin nanoparticles and conducted field trials for the project.
World Vegetable Center
This international research institute focuses on improving vegetable production and conducted the nanoparticle experiments.
The details
Moitri Santra produced the nanoparticles by dissolving lignin, a natural substance found in plant cell walls, to serve as a protective shield against environmental stressors. Greenhouse trials confirmed that this combined treatment is more effective than using beneficial bacteria in isolation.
Timeline
2022: Moitri Santra began field trials in Florida and South Carolina.
The Big Picture
This development marks a shift in agricultural nanotechnology by moving from synthetic materials to plant-derived substances. It builds upon the World Vegetable Center's agricultural nanotechnology research to create more sustainable disease management tools.
If successfully scaled, this technology could offer farmers a more reliable, natural alternative to conventional chemical pesticides. By improving the stability of biological treatments, the method may eventually lead to cheaper and more sustainable produce for consumers.
The takeaway
Lignin nanoparticles protect beneficial bacteria from UV exposure, boosting their ability to fight plant pathogens. Researchers are now working to validate these promising laboratory findings in larger field studies.
Further reading
Learn more about the latest innovations in Botany.
More information
Find further updates on the research at the World Vegetable Center homepage.
Source note: This article includes information reported by Horti Daily.
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