Environmental determinants of the arbuscular mycorrhizal fungal infectivity of Swiss agricultural soils

摘要: Arbuscular mycorrhizal fungi are ubiquitous inhabitants of soils, and they involved in cycling elements such as phosphorus carbon between soils plants. However, the environmental factors determining their activity community structure different still not fully understood. Here, a bioassay is presented to assess infectivity indigenous communities twenty sampled Swiss agricultural belt north Alps. This indicated clear negative relationships colonization plant roots nitrogen concentrations biomass. Further, comparison results with range physico-chemical, biological, geographic parameters confirmed relationship soil status Other parameters, land use, base saturation, pH, texture, had little explanatory value for patterns growth, nutrition, The this study were compared those previous one that used same methods, examined influence pollution on infectivity. It appears assay could serve comprehensive rather universal indicator quality.