Interaktion zwischen den beiden arbuskulären Mykorrhizapilzen Glomus mosseae und Glomus intraradices unter dem Einfluss des Phosphatgehaltes des Bodens und in Abhängigkeit vom Kohlenhydratstatus der Wirtspflanze Ipomea batatas

摘要: Phosphate (P) availability in the soil as well light supply to host plant are factors influencing development of arbuscular mycorrhizal symbiosis. The aim present experiment was investigate interactions between two fungi (AMF) Glomus mosseae (GM) and intraradices (GI) sharing root system one sweet potato (Ipomea batatas) under (I) low P high (-P/+L), (II) deficiency (-P/-L) or (III) (+P/+L). Mycorrhizal nonmycorrhizal plants were grown a split system. Among treatments, both parts either colonized by GI (GI * GI), GM (GM GM), 1:1 mixture AMF (Mix Mix) part while other GM). Plants harvested 40 days after planting. In (-P/+L) treatment, colonization rates did not differ depending on whether they shared with same species. contrast, (+P/+L) conditions, (GM*GI) treatment significantly higher than those all treatments very GI) Obviously gained profit from poorer side system, indicating that carbohydrate allocation fungus is regulated source-sink-relations. Our results demonstrate how changes environmental conditions can rapidly alter composition population.