Effect of the leaf extract from the maidenhair tree (Ginkgo biloba L.) on the growth of the oyster mushroom (Pleurotus spp.) mycelium



The authors investigated the impact of maidenhair alcohol extract addition on mycelium growth in two species of oyster mushroom: P. precoce and P. citrinopileatus on the agar medium and beech sawdust substrate. The following concentrations of the experimental extract were added to media and substrates: 0,1,10, 100, 1000 and 10000 ug/l. It was found that addition of extract from maidenhair leaves to agar medium either stimulated or inhibited the mycelium growth of oyster mushroom depending on extract concentration. In case of the P. precoce, stimulation of mycelium growth occurred at extract concentration of 1 and 10 ug/l, while in P. citrinopileatus - at concentration ranging from 1 to 100 ug/l. Concentrations higher than those mentioned above inhibited the growth of mycelium. The extract from maidenhair leaves added to substrate from beech sawdust was found to stimulate mycelium growth only at concentration of 10000 ug/l, irrespective of species of the examined oyster mushroom.
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