Expanded mushroom genomes with versatile adaptability

A study published in Cell Genomics reveals that various Mycena mushroom species possess unexpectedly large genomes. Previously believed to be purely saprotrophic—degrading dead organic matter—the mushrooms possess diverse genes enabling them to adapt to different lifestyles. Notably, Mycena strains in Arctic regions exhibit some of the most giant mushroom genomes recorded. These mushrooms display extensive genome expansion, encompassing genes for interacting with plants, carbon breakdown, and potentially vital yet unidentified functions. They also contain repetitive non-coding elements and genes acquired …