焦硕等《Global Change Biology》2022年

论文题目：Core microbiota drive functional stability of soil microbiome in reforestation ecosystems

论文作者：Shuo Jiao，Weimin Chen，Gehong Wei

论文摘要：Revealing the ecological roles of core microbiota in the maintenance of the functional stability of soil microbiomes is crucial for sustainable ecosystem functioning; however, there is a dearth of whole-soil profile studies on the fundamental topic in microbial ecology, especially in the context of ecological restoration. Here, we explored whether core microbiota influence the temporal changes in the functional stability of soil microbiomes throughout the soil profile (i.e., soil depths of 0–300 cm) during natural succession in restored ex-arable ecosystems, via high-throughput amplicon and metagenomic sequencing. We revealed that core microbiota were essential for the maintenance of the functional stability of soil microbiomes in reforestation ecosystems. Specifically, the core taxa within one cluster of soil network, which had similar ecological preferences, had major contributions to functional stability. Reforestation significantly decreased the functional stability of soil microbiomes, which exhibited significant variations along the vertical soil profile in the reforested soils. Overall, the findings enhance our understanding of the factors driving functional stability in soil microbiomes, and suggests that core microbiota should be considered a key factor and integrated in policy and management activities targeting the enhancement and maintenance of functional stability and ecosystem sustainability in ecological restoration programs.

揭示核心微生物在维持土壤微生物群落功能稳定性方面的生态作用对于可持续生态系统功能至关重要。然而，基于微生物生态学的角度，尤其是在生态恢复的背景下，缺乏对整个土壤剖面的研究。本研究通过高通量扩增子和宏基因组测序，探讨了在恢复前耕地生态系统自然演替过程中，核心微生物是否会影响整个土壤剖面（即土壤深度0-300 cm）中土壤微生物群落功能稳定性的时间变化。我们发现，核心微生物是维持退耕还林生态系统中土壤微生物群落功能稳定的关键。具体而言，具有相似生态偏好的土壤网络中的核心分类群对功能稳定性有重要贡献。重新造林显著降低了土壤微生物群落的功能稳定性，在重新造林的土壤中，土壤微生物群落在垂直剖面上表现出显著的变化。总的来说，这些发现加强了我们对驱动土壤微生物群落功能稳定性因素的理解，并表明核心微生物应被视为一个关键因素并纳入旨在加强和维持生态系统恢复过程中功能稳定性和生态系统可持续性的政策和管理中。

文章链接：https://onlinelibrary.wiley.com/doi/10.1111/gcb.16024