Abstract:The aim was to understand the effect of two arbuscular mycorrhizal fungi (AMF), such as Funneliformis mosseae (FM) and Glomus versiforme (GV), on the growth and phosphorus uptake of Wedelia trilobata. The changes in the growth and total P concentration of W. trilobata leaves were studied after inoculated AMF and added insoluble phosphate by sand culture pot planting. The results showed that F. mosseae and G. versiforme could establish symbiosis relationships with W. trilobata with infection rate of 55%-69% and 63%-80%, respectively. When insoluble phosphate were supplied, both F. mosseae and G. versiforme were able to promote the stem elongation (FM:+46%; GV:+65%), total biomass (FM:+27.2%; GV:+40%) and enhance phosphorus content (FM:+36.6%; GV:+40.7%) of W. trilobata. Compared to F. mosseae, G. versiforme was better in enhancing insoluble phosphorus uptake by W. trilobata. Therefore, it was suggested that the symbiosis between W. trilobata and AMF could significantly facilitate the plant growth and enhance the efficiency of insoluble phosphate uptake, which could be benefit the survival of W. trilobata in harsh environment.