ISOLATION, CULTURE, IDENTIFICATION AND BIOLOGICAL ACTIVITY OF MYCENA ORCHIDICOLA SP. NOV. IN CYMBIDIUM SINENSE (ORCHIDACEAE)
墨兰共生真菌一新种的分离、培养、鉴定及其生物活性

During a study of fungi present in cortical tissues of the roots of tropical orchids in Xishuangbannan, Yunnan, some isolates were obtained from Cymbidium sinense. One of them, morphologically belonging to Mycena, Sect. Sacchariferae, is evidently distinguished from previously described species of Mycena by its sub - fusiform pleurocystidia and caulocystidia gradually tapering towards the tip and flexous to kinked. .A new taxon, M. orchidicola, is therefore described and illustrated to accommodate this isolate. Symbiotic germination tests between seeds of 12 orchid species and M. orchidicola demonstrated M. orchidicola stimulated seed germination of 5 orchid species but it was not effective in promoting seed germination or protocorm development of other orchids. This means M. orchidicola is active and has ability to stimulate seed germination.