The strength and direction of plant response to inoculation with arbuscular mycorrhizal fungi (AM fungi) is dependent on both abiotic and biotic contexts, often generating patterns of AM fungal mediation of plant adaptation. However, knowledge of plant‐community level effects of these interactions in grassland restoration is limited. We conducted a field inoculation experiment by inoculating five plant species native to a drier prairie and five plant species native to a moister prairie with mycorrhizal fungal communities from each prairie type. Species were paired by genus or family to account for phylogenetic effects. The inoculated plants were transplanted to study plots seeded with a restoration seed mix. Plots were manipulated to create either moister or drier conditions similar to environments of the plant species and mycorrhizal communities. In both transplanted and seeded plant species, we found that only drier prairie‐range species benefited from moisture‐regime matched AM fungal inoculum. Other seeded prairie plant species demonstrated a negative response to inoculation, likely due to the earlier successional stage of these species. Additionally, nonseeded plants benefited from inoculation in different ways: native nonseeded plants had highest cover with drier prairie inoculum in drier conditions, while nonnative plants had highest cover with moister prairie‐origin inoculum. These results suggest that use of local AM fungi may be particularly important in restorations at drier sites, even at relatively small differences in moisture availability. Further, specific knowledge of relative responsiveness of seeded plant species and nonseeded plant species to AM fungal inoculation will be useful in planning restorations.

中文翻译：

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草原恢复中植物菌根相互作用对水​​分供应的适应

植物对丛枝菌根真菌（AM真菌）接种的反应强度和方向取决于非生物和生物环境，通常会产生AM真菌介导的植物适应性模式。但是，这些相互作用在草地恢复中对植物群落水平影响的知识是有限的。我们进行了田间接种实验，方法是：对较干燥草原的5种植物物种和对潮湿大草原的5种植物物种进行接种，每种植物类型均带有菌根真菌群落。物种按属或科配对，以说明系统发育效应。将接种的植物移植到研究土地上，用恢复种子混合物播种。操纵地块以产生类似于植物物种和菌根群落环境的潮湿或干燥条件。在移植和播种的植物物种中，我们都发现只有较干燥的草原范围物种才能从水分制度匹配的AM真菌接种物中受益。其他播种的草原植物物种显示出对接种的负面反应，这可能是由于这些物种的演替阶段较早。此外，非播种植物可通过不同方式从接种中受益：在干燥条件下，天然非播种植物被干燥的草原接种物覆盖率最高，而非本地植物被湿润的草原起源的接种物覆盖率最高。这些结果表明，即使在水分供应差异较小的情况下，局部AM真菌的使用对于干燥地点的修复可能尤为重要。进一步，