Fig. 1

Decomposition of a fallen tree log by Trametes versicolor (Tv). a Fallen tree log, presenting fresh organic plant matter. b Tv mycelium is growing inside the log, decomposing the plant biomass by fermentation, in a highly dynamic exchange of solubilized nutrients from the tree log, resulting from secreted fungal enzymes, combined with anti-microbial defense compounds to protect the mycelial territory. c Fruitbodies serve to spread the spores of the Tv mushrooms, and have a narrower chemical composition, focused on beta-glucans, spores, attractants to animals that may eat and transport the spores, and protectants to protect the fruitbodies from bacteria and other fungi