Crops’ wild relatives host a wide range of microorganisms, including some beneficial species that are not found or are under-represented in the domesticated crops. Our goal was to study the underexplored composition of root-associated fungal communities in endangered wild grapevines. We found high taxonomic diversity representing multiple trophic guilds that include beneficial symbiotrophs and endophytes. Soil factors explain a relatively small part of their overall variability. In contrast, the majority of the associated fungal taxa shows a close fit to the neutral model for prediction of their distributions. Only beneficial arbuscular mycorrhizal fungi and the pathogenic Ilyonectria depart from the neutral distribution model and form intimate interactions with the plant host. In addition, pathogenic fungi rarely occurred in samples that included ectomycorrhizal fungi, which suggested potentially applicable inter-microorganism interactions. High abundance and diversity of fungal endophytes on the wild grapevine roots highlight the need for their careful consideration in future studies.

作物的野生近缘种拥有多种微生物，其中包括一些在驯化作物中未发现或代表性不足的有益物种。我们的目标是研究濒危野生葡萄树中与根相关的真菌群落的未充分开发的成分。我们发现高生物分类学多样性代表着多种营养协会，包括有益的共生体和内生菌。土壤因素解释了它们整体变化中相对较小的部分。相反，大多数相关的真菌类群显示出与中性模型非常吻合的模型，以预测其分布。只有有益的丛枝菌根真菌和致病性肠粘连脱离中性分布模型并与植物宿主形成紧密的相互作用。此外，致病真菌很少在包括外生菌根真菌的样品中发生，这表明潜在的微生物间相互作用可能适用。野生葡萄根上真菌内生菌的丰富度和多样性突出了在以后的研究中需要仔细考虑它们的必要性。