Soil protist communities form a dynamic hub in the soil microbiome

Soil protist communities form a dynamic hub in the soil microbiome
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土壤原生生物群落形成土壤微生物组的动态中心

DOI:
10.1038/ismej.2017.171
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发表时间:
2017-10
期刊:
The ISME Journal
影响因子:
--
通讯作者:
Stefan Geisen
Stefan Geisen
中科院分区:
其他
文献类型:
--
作者:
Wu Xiong;Alex;re Jousset;Sai Guo;Ida Karlsson;Qingyun Zhao;Huasong Wu;George A Kowalchuk;Qirong Shen;Rong Li;Stefan Geisen

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土壤微生物对土壤肥力至关重要。然而,大多数研究都集中在细菌和/或真菌群落上,而这种微生物组组成的自上而下的驱动因素,原生生物,仍然知之甚少。在这里,我们调查了土壤改良剂如何影响原生生物群落,并推断与细菌和真菌的潜在相互作用。特定施肥处理对原生生物群落结构和功能均有影响。有机肥施用强烈降低了植物病原原生生物的相对丰度,增加了食菌性和杂食性原生生物的相对丰度。单个生物控制细菌和真菌的添加进一步改变了土壤原生生物群落的组成,并最终改变了功能。整合原生生物,细菌和真菌群落数据的网络分析,将原生生物作为土壤微生物组的中心枢纽,连接不同的细菌和真菌种群。鉴于原生生物对土壤管理实践的动态响应以及在连接土壤微生物网络中的关键地位,原生生物可以在土壤管理与细菌和真菌微生物群的增强之间提供杠杆作用,以改善土壤健康。
Soil microbes are essential for soil fertility. However, most studies focus on bacterial and/or fungal communities, while the top-down drivers of this microbiome composition, protists, remain poorly understood. Here, we investigated how soil amendments affect protist communities and inferred potential interactions with bacteria and fungi. Specific fertilization treatments impacted both the structure and function of protist communities. Organic fertilizer amendment strongly reduced the relative abundance of plant pathogenic protists and increased bacterivorous and omnivorous protists. The addition of individual biocontrol bacteria and fungi further altered the soil protist community composition, and eventually function. Network analysis integrating protist, bacterial and fungal community data, placed protists as a central hub in the soil microbiome, linking diverse bacterial and fungal populations. Given their dynamic response to soil management practices and key position in linking soil microbial networks, protists may provide the leverage between soil management and the enhancement of bacterial and fungal microbiota at the service of improved soil health.
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发表时间: 2015
影响因子: 5.2
作者:
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期刊: The Journal of eukaryotic microbiology
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