Researchers studied the soil fungi living around Russula griseocarnosa, a valuable wild edible mushroom that cannot be grown in farms. They found that the soil around this mushroom contains specific beneficial fungi like Penicillium and Trichoderma that help it grow, and that these fungal communities differ depending on geographical location. The study shows that using fertilizers containing nitrogen, phosphorus, potassium, and beneficial fungi could help protect and increase the production of this wild mushroom.