Researchers discovered that a type of bacteria called Serratia odorifera promotes the growth of a popular edible mushroom (Hypsizygus marmoreus) through chemical signal molecules. By analyzing the mushroom’s metabolism when exposed to these bacterial signals, scientists found that the bacteria enhance the mushroom’s ability to process carbohydrates and generate energy, leading to faster mycelial growth and better fruiting. These findings could help improve mushroom farming practices by reducing growing time and increasing yields.