Researchers discovered that a beneficial bacterium called Pseudomonas sp. HP-1 can produce a natural compound that effectively prevents mold contamination in stored maize seeds. The extract from this bacterium showed strong antifungal activity against Aspergillus flavus, a major cause of aflatoxin contamination in grain storage. The main protective compound was identified as phenazinecarboxylic acid, which works by damaging the cell membranes of fungal cells. This finding offers a promising eco-friendly alternative to synthetic chemical fungicides for protecting stored crops.