【摘要-土壤微生物多样性|16S+ITS微生物多样性 】土壤细菌-真菌之间的多样性和微生物群落复杂度可以预测生态功能

  • 2019-11-18 14:52:50
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英文题目:Fungal-bacterial diversity and microbiome complexity predict ecosystem functioning


期刊名称:NATURE COMMUNICATIONS      IF11.878              

发表时间:2019.10.24                        DOI10.1038/s41467-019-12798-y

相关产品:16S+ITS微生物多样性                 测序平台:Roche454

样品来源:土壤

关键词:土壤菌群   网络分析  细菌-真菌互作  草地生态系统

文献摘要:

The soil microbiome is highly diverse and comprises up to one quarter of Earth’s diversity. Yet, how such a diverse and functionally complex microbiome influences ecosystem functioning remains unclear. Here we manipulated the soil microbiome in experimental grassland ecosystems and observed that microbiome diversity and microbial network complexity positively influenced multiple ecosystem functions related to nutrient cycling (e.g. multifunctionality). Grassland microcosms with poorly developed microbial networks and reduced microbial richness had the lowest multifunctionality due to fewer taxa present that support the same function (redundancy) and lower diversity of taxa that support different functions (reduced functional uniqueness). Moreover, different microbial taxa explained different ecosystem functions pointing to the significance of functional diversity in microbial communities. These findings indicate the importance of microbial interactions within and among fungal and bacterial communities for enhancing ecosystem performance and demonstrate that the extinction of complex ecological associations belowground can impair ecosystem functioning.

摘要翻译:

土壤微生物多样性高,拥有地球上超过四分之一的生物多样性。然而,这种高度多样化、功能复杂的微生物群落是如何影响生态系统功能的尚不可知。本文对实验性草地生态系统中的土壤微生物群落进行研究,观察到微生物多样性和微生物网络复杂性积极响应生态系统的多种养分循环(如多功能性)。丰富度较低且互作网络较为简单的微生物群落,由于具有相同功能的物种减少(即功能冗余性降低),以及具有不同功能的物种多样性降低(即功能特异性降低),使其具有最低的多功能性。此外,不同的物种解释了不同的生态功能,也指出了微生物群落中功能多样性的意义。这些发现表明细菌、真菌群落内部以及细菌-真菌群落之间的微生物互作对于增强生态功能的重要性,意味着地下复杂生态系统的消失会损害生态功能。

重要结果展示:


图1 土壤中微生物群落丰富度和微生物互作网络复杂性逐渐降低


2 微生物互作网络复杂性与生态系统多功能性强正相关



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