Competition for nutrients is an important factor structuring plant communities.Plant symbionts such as arbuscular mycorrhizal fungi (AMF) can have considerable influence on nutrient uptake and are therefore likely to influence plant competition.In this study we investigated the influence of different AMF isolates on the competitive relationships between Rhus chinensis and three other plants: Rhus chinensis,Choerospondias axillari and Cinnamomum camphora.