Isolation of a novel sex hormone, tremerogen A-10, controlling conjugation tube formation in Tremella mesenterica fries.

Tremella mesenterica Fr., a Basidiomysete, is dimorphic, producing a homokaryotic yeast-like form as well as a typical dikaryotic mycelium and the basidiospores on dikaryotic mycelium germinate to form homokaryotic cells, which ordinarily propagate by budding.' Between two compatible homokaryotic cells, the mating of both cells readily occures leading to a dikaryotic mycelium. In the mating