Community-level interactions between plants and soil biota during range expansion

1. Plant species that expand their range in response to current climate change will encounter soil communities that may hinder, allow, or even facilitate plant performance. It has been shown repeatedly for plant species originating from other continents that these plants are less hampered by soil communities from the new than from the original range. However, information about the interactions between intra-continental range expanders and soil communities is sparse, especially at community level.
2. Here we used a plant-soil feedback experiment approach to examine if the interactions between range expanders and soil communities change during range expansion. We grew communities of range-expanding and native plant species with soil communities originating from the original and new range of range expanders. We determined the composition of fungi, bacteria and nematodes in these conditioned soils by high-throughput amplicon sequencing of the ITS region and the 16S rRNA gene and using morph...

1. 响应当前气候变化而扩张分布范围的植物物种，将会遭遇各类土壤群落——这些土壤群落可能抑制、中性甚至促进植物的生长表现。已有多项研究反复证实，来自其他大陆的外来植物，其生长受到新分布区土壤群落的抑制程度显著低于其原生分布区土壤群落。然而，关于大陆内部分布扩张物种与土壤群落之间的互作关系的研究信息仍较为匮乏，尤其是在群落尺度层面。
2. 本研究采用植物-土壤反馈实验方法，旨在探究分布扩张过程中，物种与土壤群落的互作关系是否发生改变。我们将分布扩张物种与本土植物的群落，分别接种源自分布扩张物种原生分布区与新分布区的土壤群落进行培育。通过对ITS区（ITS region）与16S rRNA基因（16S rRNA gene）开展高通量扩增子测序，并结合形态学手段，我们测定了上述驯化土壤中真菌、细菌与线虫的群落组成，原文后续内容未完整呈现。