Community characteristics of arbuscular mycorrhizal fungi associated with ephemeral plants in southern edge of Gurbantunggut Desert
古尔班通古特沙漠南缘短命植物根际AM真菌群落特征研究

Arbuscular mycorrhizal (AM) fungi of six species of ephemeral plants, Plantago minuta, Gagea sacculifera, Gagea nigra, Tulipa iliensis, Ixiolirion tataricum and Geranium transversale in undershrub of Gurbantunggut Desert (southern edge) were investigated. Species diversity, spore densities, biovolume and community structures of the fungi were analyzed. Twenty-four species of AM fungi belonging to 2 genera, Acaulospora and Glomus, which were isolated from the rhizosphere of the 6 species of ephemeral plants were obtained. G. aggregatum, G. etunicatum, G. claroideum and G. deserticola were dominant, with the frequency of ?50% in order of G. aggregatum ? G. claroideum ? G. etunicatum ? G. deserticola. The spore density higher than 1/g soil of the dominant species was ranked as G. aggregatum ? G. etunicatum ? G. claroideum ? G. deserticola.