Underlying the early signaling and gene expression of Pleurotus ostreatus mycelia during injury response.

Summary: Did you know that mushrooms have a sophisticated alarm system when they get hurt? Just like animals and plants, fungi need to protect themselves from physical damage. Scientists studied the Oyster mushroom (Pleurotus ostreatus) to see exactly what happens when its mycelia (root-like structures) are injured. They discovered that the mushroom triggers a rapid defense response using a burst of "reactive oxygen" and specific signaling pathways known as MAPK. The fungus even produces carbon monoxide as part of this internal distress signal. This study reveals that mushrooms are far more biologically active and responsive to their environment than we might think, using complex chemistry to survive and repair physical cuts.