An overview of the updated classification system and species diversity of arbuscular mycorrhizal fungi Influences of long-term enclosure on the restoration of plant and AM fungal communities on grassland under different grazing intensities Survey and Analysis of Microsatellites from DNA Sequences in Camellia Species Using 454 Pyrosequencing Fungal diversity in Cunninghamia lanceolata plantation soil Differences of fungal diversity and structure in rhizosphere of Fritillaria thunbergii from different provenances