Assemblies of leaf and root mycobiomes in a temperate grassland: Dispersal limitation overpowers selection

The emergence of β-diversity of plant-associated fungi across diverse coexisting host plant species in natural habitats is intricately linked to specific community assembly processes. Despite this, the relative contributions of various assembly processes to the observed β-diversity patterns, as well as the influence of plant traits on these contributions, are still poorly understood. Here, we investigated the leaf/root-associated fungal communities across nine coexisting dominant herbaceous perennials in a temperate grassland that had undergone a 17-year mowing treatment. We elucidated the β-diversity components and community assembly processes of these fungal communities. Furthermore, we explored relationships between leaf/root functional trait variations and fungal community assemblies. We tested the following hypotheses: (1) both species turnover and nestedness are important components of the fungal β-diversity, with selection predominating in the fungal community assemblies; (2) mow..., , , In this study, we investigated the structures and assembly processes of leaf- and root-associated fungal communities, and their relationships with plant traits, plant phylogeny, soil properties, and spatial distance, using nine plant species in a long-term (17-year) mowing experiment site within a temperate grassland. This dataset comprises four sheets:

(1) Leaf and root traits: Plant trait data (leaf and root calcium, iron, potassium, manganese, phosphorus, and the ratio of carbon (C) to nitrogen (N)) for the nine host plant species in two treatments (Control and Mowing), including plant species taxonomic information and corresponding experimental replicate numbers. The units for element contents in leaves and roots are as follows: calcium (Ca, g kg-1), iron (Fe, mg kg-1), potassium (K, g kg-1), manganese (Mn, mg kg-1), and phosphorus (P, g kg-1).

(2) Soil properties: The ratio of soil carbon (C) to nitrogen (N) content for each experimental plot in the two treatments (Control and Mo...

自然生境中多种共存宿主植物物种间植物关联真菌的β多样性（β-diversity）形成，与特定的群落组装过程紧密相关。尽管如此，目前对于各类组装过程对观测到的β多样性格局的相对贡献，以及植物性状对这些贡献的影响，仍知之甚少。
本研究针对一处经历了17年刈割处理的温带草原，对9种共存的优势多年生草本植物的叶/根关联真菌群落展开调查，阐明了这些真菌群落的β多样性组成与群落组装过程。此外，本研究还探讨了叶/根功能性状变异与真菌群落组装之间的关联。我们验证了以下假说：（1）物种周转与嵌套性均为真菌β多样性的重要组成部分，且选择过程在真菌群落组装中占主导地位；（2）刈割……（原文此处截断）。
本研究依托温带草原内一处为期17年的刈割实验样地，选取9种植物，调查了叶、根关联真菌群落的结构与组装过程，及其与植物性状、植物系统发育、土壤性质及空间距离的关联。本数据集包含四个工作表：
(1) 叶与根性状：包含两种处理（对照组与刈割组）下9种宿主植物的性状数据（叶与根的钙、铁、钾、锰、磷含量，以及碳（C）氮（N）比），涵盖植物物种分类学信息及对应的实验重复编号。叶与根中各元素含量的单位如下：钙（Ca，g kg⁻¹）、铁（Fe，mg kg⁻¹）、钾（K，g kg⁻¹）、锰（Mn，mg kg⁻¹）及磷（P，g kg⁻¹）。
(2) 土壤性质：包含两种处理（对照组与刈割组，原文此处截断）下各实验样地的土壤碳（C）氮（N）含量比。