Host plant phylogeny and abundance predict root‐associated fungal community composition and diversity of mutualists and pathogens

摘要: Interactions between plants and their root‐associated fungi (RAF) may influence the relative abundance of tree species determine forest community diversity. Such plant–soil feedbacks in turn depend on degree to which spatial distance phylogenetic relatedness host trees structure pathogen mutualist communities, but research detailing these aspects RAF communities is lacking. Here, we characterize plant–RAF associations across a diverse plant community, focusing are structured by distance, relatedness, abundance. We compare results for different functional groups, including both putative mutualists pathogens, an aspect poorly examined hitherto. collected roots at regular intervals along ten 50 m 2 m transects, then used DNA barcoding identify plants, associated fungal community. Variance partitioning was measure contributions explaining composition. A weighted linear regression correlation Phylogenetic among hosts better predictor composition than this relationship stronger pathogens mutualists, suggesting that show preference mutualists. Across all showed similar levels structure. Additionally, locally abundant were less rare plants. Synthesis. found and, lesser extent, with showing Abundant had hosts, notable because tend experience weaker negative feedback. Going forward, mechanisms underlying abundance‐RAF diversity warrant further investigation. survey approach presented here could be paired experiments linking recruitment.