Researchers report that silver nanoparticles (AgNPs) could provide a sustainable alternative to chemical fungicides against Colletotrichum capsici, the main fungus behind anthracnose in chilli crops. The nanoparticles not only inhibit fungal growth, especially at higher concentrations, but also activate plant immune responses by triggering defense genes and stress-signaling pathways. Plants treated with AgNPs showed reduced fruit rot, stronger tissue integrity, and improved nutrient uptake, suggesting a dual role as antifungal agent and immune stimulant. While the findings support AgNPs as a promising tool for resilient crop protection, scientists note that long-term environmental safety remains a key area for future research.
