Volume 19 Part 1 Article 146
Title: Fruiting body development of Schizophyllum commune on twigs and branches
Author: Ursula Kües, Karin Lange and Kiran Lakkireddy
Dikaryons of Schizophyllum commune easily form fruiting bodies on artificial medium. The fruiting process can be divided into first loose hyphal aggregate (knot) formation, stalk formation by upwards organized growth of the aggregate, apical pit formation (stage III primordium), peripheral expansion of the cup-like pileus (advanced apical pit stage), and split forked pseudolamellae formation into the young stage IV mushroom that continues to grow at the periphery. Basidiospores are continuously produced by the mushroom. In nature, fruiting bodies are observed on twigs and branches of various tree species. Over 260 host species are known for the fungus. Among other living hosts, we have observed fruiting bodies on branches and stems of walnut, cherry, and lilac. Fruiting bodies appear on their hosts on sunny south to west sides at cracks within the bark. More regularly, the fungus was detected on fresh deadwood of multiple hardwood species. Similarly, fruiting bodies are seen to emerge in cracks of bark on the sunny sides on dead twigs, branches or also felled stems. We are interested in the process of fruiting body development. Here we present a system in the lab to initiate fruiting body formation on infested twigs of different tree species collected from nature. We use this system to follow up the early steps in fruiting body development on natural substrate.