[Effects of fertilization on arbuscular mycorrhizal fungi in Elymus nutans roots].

By using traditional staining and DNA cloning and sequencing techniques, this paper studied the effects of fertilization on the arbuscular mycorrhizal (AM) colonization and AM fungal community in Elymus nutans roots across an 8-year nitrogen (N) and phosphorus (P) fertilization gradient. With the increasing level of fertilization, the AM colonization and arbuscular colonization per unit root length reduced from 67.5% to 7.