Research On The Oligotrophic Fungi In Dinghu Mountain Nat-ure Reserve

Oligotrophic fungi in soil play a special role in the ecosystem. In general, oligotrophicfungi were a group of fungi which can grow in the oligotrophic environments, including strictoligotrophic fungi and facultative oligotrophic fungi. Oligotrophic fungi were still relativelyless studied due to the difficulties in the isolation. Oligotrophic soil fungi are an important classof microorganisms in the ecosystem plays a special role. Usually, in the broad sense refersoligotrophic fungi can grow in oligotrophic environment of a class of fungi, including strictoligotrophic fungi and facultative oligotrophic fungi can also be classified according tonutritional deficiency, lack divided carbon, nitrogen loss, other missing elements. Studies haveshown that there are some oligotrophic fungi can absorb a small amount from the air and makeuse of carbon and nitrogen, with a very special physiological characteristics and higherresearch and value in use. Currently, oligotrophic fungi are still relatively weak. Oligotrophicfungi in soil conduct research on biodiversity conservation, biological resources and utilizationof the depth of excavation has important significance.In this study,40samples were collected from the Dinghu Mountain Nature Reserve usingthe oligotrophic medium. Three hundred and twenty-one strains were isolated and identified to44genera, strains among15genera,98species were selected and studied in detail based onmorphological and phylogenetic analyses. There are some dominant genus in theDinghushan,such as Paecilomyces、Trichoderma、Chaunopycnis. Six new specie are describedin this thesis, and one species has been published, Plectospharella oligotrophic, which ispublished in Mycoscience (SCI).