Fallopia japonica and Impatiens glandulifera are colonized by species-poor root-associated fungal communities but have minor impacts on soil properties in riparian habitats

Abstract Fallopia japonica and Impatiens glandulifera are major plant invaders on a global scale that often become dominant in riparian areas. However, little is known about how these species affect interactions soil–plant systems. The aim of this study was to investigate the impact both abiotic biotic soil properties, with special focus fungi. We investigated eight sites along small streams invaded by F. I. , respectively, compared each nearby dominated native Urtica dioica . Three different types samples were collected: bulk soil, rhizosphere roots from invasive stands at site. Bulk analysed for physicochemical, microbial properties (soil respiration ergosterol) arthropod abundance (Acari Collembola). Soil also evaluated samples. fungal community composition using metabarcoding approach. physicochemical as well activity, biomass operational unit taxonomic (OTU) richness did not differ between habitats, indicating only minor belowground impacts two species. OTU rather related properties. In contrast, Acari decreased 68% presence while Collembola increased 11% sites. Moreover, root-associated communities differed plants. roots, all ecological groups (mycorrhiza, endophytes, parasites, saprobes) lower U. mycorrhiza saprobic fungi lower. Overall, our findings show can influence arthropods characterized