The mycorrhizal fungi Rhizopogon luteolus Fr. and Nordh, Boletus elegans Schum. ex. Fr. and Suillus tuteus L. ex Fr., were investigated for cytokinin production in vitro. Culture filtrates in which the fungi had been growing for at least 2 weeks showed cytokinin activity when purified and bioassayed using soybean callus tissues. The cytokinin activity in the culture filtrate increased with longer periods of incubation.
Granted, I don't understand much of the conversation at this stage But is this useful? Could you simply introduce certain myco to provide a natural source of cytos?