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Drivers and assemblies of soil eukaryotic microbes among different soil habitat types in a semi-arid mountain in China

机译:中国半干旱山区不同生境类型土壤真核微生物的驱动力和聚集

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摘要

The effects of environmental and species structure on soil eukaryotic microbes inhabiting semi-arid mountains remain unclear. Furthermore, whether community assembly differs in a variety of soil habitat types, for example, artificial forest, artificial bush, farmland, and natural grassland, is not well understood. Here, we explored species diversity and composition of soil eukaryotic microbes south of the Taihang Mountains (mid-western region of China) using Illumina sequencing of the 18S rRNA gene (V4) region on the MiSeq platform. The results suggest that the forest soil habitat type improved the diversity and abundance of soil eukaryotic microbes that will benefit the restoration of degraded soil. The SAR (Stramenopiles, Alveolates, Rhizaria) supergroup and Metazoa were the dominant soil eukaryotic microbial groups at the phylum level. About 26% of all operational taxonomic units were common among the different soil habitat types. The O-elements, water content, soil organic matter, and elevation significantly influenced the abundance of soil eukaryote communities (P < 0.05). Our findings provide some reference for the effectiveness of local ecological restoration and the establishment of a soil eukaryotic microbe resource databases in a semi-arid area.
机译:环境和物种结构对居住在半干旱山区的土壤真核微生物的影响尚不清楚。此外,人们对社区组装在各种土壤生境类型(例如,人工林,人工灌木,农田和天然草地)中是否有所不同的了解还不够。在这里,我们使用MiSeq平台上的18S rRNA基因(V4)区的Illumina测序,探讨了太行山以南(中国中西部地区)土壤真核微生物的物种多样性和组成。结果表明,森林土壤生境类型改善了土壤真核微生物的多样性和丰富性,将有利于退化土壤的恢复。 SAR(Stramenopiles,Alveolates,Rhizaria)超群和后生动物是真核中主要的土壤真核微生物群。在不同的土壤生境类型中,所有可操作的分类单位中约有26%是常见的。 O元素,水分,土壤有机质和海拔高度显着影响土壤真核生物群落的丰度(P <0.05)。我们的发现为半干旱地区局部生态修复的有效性和建立土壤真核微生物资源数据库提供了参考。

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