Diversity and interaction of soil fungi in the rhizosphere of Armillaria mellea and Amanita japonica fruited in Jeju Island
Na Young Yoon1, Seong Hwan Kim1, Pyung Yeol Ko2, and Hye-Sung Park3
1Dankook University, Cheonan, Republic of Korea, Sustainable Agriculture Research Institute, 2Jeju National University, Jeju, Republic of Korea; 3Mushroom Research Division, National Institute of Horticultural & Herbal Science, Eumseong, Republic of Korea.
Wild mushrooms are new kind candidates of advancement in the food and pharmaceutical industries or biotechnology. Soil fungi are factors that promote or inhibit mushroom development while interacting with mushrooms in the environment. However, the identification of soil fungi near wild mushrooms and their effects on mushrooms are not much known. To obtain basic data on wild mushroom root fungus, we investigated the biodiversity of the rhizosphere soil around Armillaria mellea and Amanita japonica in Jeju Island. Mariannaea humicola,Tolypoclaadium album and Trichoderma guizhouense were isolated and identified in the rhizosphere soil of A. mellea. While Gongronella orasabula, Ketomycse carneus, Oidiodendron flavum, Penicillium adametizii, Penicillium deleae, Penicillium jianfenglingense, olypocladium album, Trichoderma koningiopsis, Umbelopsisis abelline were isolated in the rhizosphere soil of A. japonica. Among them, three Penicillium species were found. To understand interactions between wild mushroom mycelia and the isolated fungi, dual culture was performed on PDA. As a result of four weeks of dual culture with the three isolated fungi, A. mellea were antagonistic against two species but not to Trichoderma guizhouense. In the results of two weeks of dual culture with the three isolated fungi, A. japonica revealed antagonistic against six species but not Trichoderma koningiopsis.