In order to explore the influence of arbuscular mycorrhizal (AM) fungi in the rhizosphere of poisonous plants on the neighboring pasture grasses in the Tibetan Plateau Alpine meadow ecosystem, rhizosphere soils were collected from eight different poisonous plants in degraded grasslands and one from pasture grass in non-degraded grasslands (CK). The collected soils were used as inocula to assess the influence of indigenous AM fungi on the growth of two typical pasture grass species, Elymus nutans and Poa pratensis, in a bioassay experiment. Five growth parameters and two AM parameters were determined. The mycorrhizal responsiveness and the importance value were calculated. Significant differences between the eight poisonous plants and CK were observed. Compared to CK, rhizosphere soil from the eight poisonous plants had lower AM fungal spore densities. The growth of E. nutans and P. pratensis seedlings was depressed with the inoculation from poisonous plants rhizosphere soil. This study demonstrated that the presence of poisonous plants with grassland degradation altered inherent AM fungal community abundance, and could exert inhibition effects on the growth of pasture grasses. It may attribute to discover the important role of rhizosphere soil of different poisonous plants to AM fungal community on the Alpine meadow.

为了探讨有毒植物根际的丛枝菌根真菌对青藏高原高山草甸生态系统中邻近草场的影响，从退化草地的八种不同有毒植物中提取了根际土壤，而在青藏高原的草场中，从根际土壤中提取了根际土壤。非退化草原（CK）。收集的土壤被用作接种物，以评估本土AM真菌对两种典型的牧草物种-披碱草（Elymus nutans） 和 禾本科（Poa pratensis）的生长的影响。 ，在生物测定实验中。确定了五个生长参数和两个AM参数。计算菌根反应性和重要性值。观察到八种有毒植物和CK之间的显着差异。与CK相比，八种有毒植物的根际土壤AM真菌孢子密度较低。花生 和 斑节对虾的生长  接种有毒植物根际土壤可抑制幼苗生长。这项研究表明，草地退化的有毒植物的存在改变了固有的AM真菌群落丰度，并且可以对牧草的生长产生抑制作用。可能是发现不同有毒植物的根际土壤对高寒草甸AM真菌群落的重要作用。