Environment and host as large-scale controls of ectomycorrhizal fungi
Environment and host as large-scale controls of ectomycorrhizal fungi
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DOI：
10.1038/s41586-018-0189-9
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发表时间：
2018-06
期刊：
影响因子：
64.8
通讯作者：
S. Linde;S. Linde;L. Suz;C. Orme;Filipa Cox;H. Andreae;E. Asi;B. Atkinson;B. Atkinson;S. Be
中科院分区：
文献类型：
--
作者：
S. Linde;S. Linde;L. Suz;C. Orme;Filipa Cox;H. Andreae;E. Asi;B. Atkinson;B. Atkinson;S. Be
解释驱动地球化学过程的土壤生物的大规模多样性及其对环境变化的反应至关重要。然而，在大的空间尺度上确定某些土壤生物地下多样性和丰度的一致驱动因素仍然存在问题。在这里，我们以据我们所知前所未有的空间规模和分辨率调查了欧洲森林中的一个主要群体--外生菌根真菌，以探索外生菌根多样性的关键生物和非生物预测因子，并确定复杂环境梯度变化的主导反应和阈值。我们展示了38个宿主、环境、气候和地理变量对外生菌根多样性的影响，并定义了关键变量的群落变化阈值。我们量化主机的特异性，并揭示可塑性在跨梯度的土壤觅食功能性状。我们的结论是环境和宿主因素解释了外生菌根多样性的变化，作为主要生态系统评估工具的环境阈值需要调整，地下特异性和可塑性的重要性以前被低估。
Explaining the large-scale diversity of soil organisms that drive biogeochemical processes—and their responses to environmental change—is critical. However, identifying consistent drivers of belowground diversity and abundance for some soil organisms at large spatial scales remains problematic. Here we investigate a major guild, the ectomycorrhizal fungi, across European forests at a spatial scale and resolution that is—to our knowledge—unprecedented, to explore key biotic and abiotic predictors of ectomycorrhizal diversity and to identify dominant responses and thresholds for change across complex environmental gradients. We show the effect of 38 host, environment, climate and geographical variables on ectomycorrhizal diversity, and define thresholds of community change for key variables. We quantify host specificity and reveal plasticity in functional traits involved in soil foraging across gradients. We conclude that environmental and host factors explain most of the variation in ectomycorrhizal diversity, that the environmental thresholds used as major ecosystem assessment tools need adjustment and that the importance of belowground specificity and plasticity has previously been underappreciated.