Context dependency, co-introductions, novel mutualisms, and host shifts shaped the ectomycorrhizal fungal communities of the alien tree Eucalyptus globulus

摘要: The identity and relevance of the ectomycorrhizal (ECM) fungal partners Eucalyptus globulus was investigated in NW Spain, to detect which symbionts mainly support its invasiveness. Root tips E. three common native plant species (Quercus robur, Pinus pinaster Halimium lasianthum) were collected eucalypt plantations, Q. robur forests, P. plantations shrublands. Fungal taxonomical ascertained by use rDNA direct sequencing. We studied diversity, composition colonization rate ECM communities determine if assemblages are host specific (i.e. similar different habitats) or more dependent on neighbourhood context. also identified type associations formed co-introductions, familiar novel associations). Twenty-six taxa associated with globulus. Most them engaged eucalypts, whereas only co-introduced Australian aliens. Eucalypt richness, diversity differed between habitats, being higher oak shrublands showed lowest diversity. fungus Descolea maculata dominated assemblage spread plants, all posing risk further co-invasion.