Researchers identified a natural compound called decursin from angelica plants that helps plants fight off dangerous fungal infections in two ways: it strengthens the plant’s own immune system and directly kills the fungal pathogens. This dual-action approach makes decursin a promising natural alternative to synthetic fungicides for protecting crops like wheat and tomatoes from diseases. The compound shows particular promise because it comes from plants, breaks down easily in the environment, and is more effective than other natural antimicrobial compounds currently used in agriculture.