Growth response, phosphorus content and root colonization of Polylepis australis Bitt. seedlings inoculated with different soil types

摘要: Polylepis forests are one of the most endangered high mountain ecosystems South America and reforestation with native species has been highly recommended. Greenhouse bioassays were set up to determine influence three different soils on growth phosphorous nutrition australis seedlings. Soils collected from a grassland, rare mature forest degraded due repeated fires. We identified arbuscular mycorrhizal fungi (AMF) present in after 12 months we harvested seedlings evaluate root shoot biomass, plant P content colonization by AMF dark septate endophytes (DSE). The soil inocula contained 26 morphospecies. Grassland inoculum showed highest richness, community assembly grassland inocula. Root biomass inoculated soil, meanwhile similar between all treatments. correlated negatively DSE was colonization, thus these fungal symbionts could be competing for resources. Our results indicate that stand potential improve P. performance, probably dominance Glomeraceae Acaulosporaceae families. However, other microorganisms together natural inocula, affecting response Future studies evaluating effect under field conditions should carried out.