Scientists studied how morel mushrooms respond to different temperatures to understand why cultivation can be unpredictable. By analyzing gene activity in mushroom mycelia (the underground filaments) at temperatures from 5°C to 30°C, they found that 15-20°C was ideal for growth. At higher temperatures, the mushrooms showed signs of stress similar to heat damage in other organisms, turning brownish and activating protective genes. This research helps mushroom farmers optimize growing conditions for better yields.