Microbial amendments alter protist communities within the soil microbiome
Microbial amendments alter protist communities within the soil microbiome
复制标题
微生物改良剂改变土壤微生物组内的原生生物群落
DOI：
10.1016/j.soilbio.2019.05.025
复制
发表时间：
2019
影响因子：
9.7
通讯作者：
Geisen Stefan
中科院分区：
文献类型：
--
作者：
Xiong Wu;Li Rong;Guo Sai;Karlsson Ida;Jiao Zixuan;Xun Weibing;Kowalchuk George A;Shen Qirong;Geisen Stefan
对植物有益的微生物会改善，而病原体会降低植物的性能。当引入土壤时，此类微生物可以引起整个微生物组的变化。然而，这些微生物的引入对原生生物（土壤微生物群中的主要捕食者）的影响仍然未知。在这里，我们跟踪了土壤原生生物如何对细菌（芽孢杆菌和拉尔斯通氏菌）和真菌（木霉和镰孢菌）的引入做出反应，这两个微生物群都由一种有益的和一种致病的分类单元代表。我们发现对植物有益的芽孢杆菌改变了原生生物群落结构。这种群落转变可能是由真菌/细菌比率增加引起的，所有处理中真菌/细菌比率与吞噬原生生物相对丰度的负相关性也支持了这种变化。我们的结果表明，微生物的引入可以影响原生生物群落，从而改变微生物组衍生的多功能性。
Plant-beneficial microbes improve while pathogens reduce plant performance. When introduced in soils, such microbes can induce entire microbiome changes. However, the impact of those microbial introductions on protists – key predators within the soil microbiome – remain unknown. Here, we tracked how soil protists respond to bacterial (BacillusandRalstonia) and fungal (TrichodermaandFusarium) introductions, with both microbial groups represented by one beneficial and one pathogenic taxon. We found that plant-beneficialBacillusbacteria change the protist community structure. This community-shift was likely induced by an increased fungi/bacteria ratio, supported by a negative correlation of the fungi/bacteria ratio with the relative abundance of phagotrophic protists across all treatments. Our results indicate that microbial introductions can impact protist communities, thereby altering microbiome-derived multi-functionality.