Soil core microbiota drive community resistance to mercury stress and maintain functional stability

Soil microbial communities have resistance to environmental stresses and thus can maintain ecosystem functions such as decomposition, nutrient provisioning, and plant pathogen control. However, predominant factors driving community resistance of soil microbiome to heavy metal pollution stresses and...

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Bibliographic Details
Published in:The Science of the total environment 2023-10, Vol.894, p.165056-165056, Article 165056
Main Authors: Du, Shuai, Li, Xin-Qi, Feng, Jiao, Huang, Qiaoyun, Liu, Yu-Rong
Format: Article
Language:English
Subjects:
Agricultural ecosystems
Community resistance
Core microbiota
Environmental stresses
Functional stability
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Summary:Soil microbial communities have resistance to environmental stresses and thus can maintain ecosystem functions such as decomposition, nutrient provisioning, and plant pathogen control. However, predominant factors driving community resistance of soil microbiome to heavy metal pollution stresses and ecosystem functional stability are still unclear, limiting our ability to forecast how soil pollution might affect ecosystem sustainability. Here, we conducted microcosm experiments to estimate the importance of soil microbiome in predicting community resistance to heavy metal mercury (Hg) stress in paired paddy and upland fields. We found that community resistance of soil microbiome was strongly correlated with ecosystem functional stability, so were the individual groups of organisms such as bacteria, saprotrophic fungi, and phototrophic protists. The core phylotypes within soil microbiome had a major contribution to community resistance, which was essential for the maintenance of functional stability. Co-occurrence network further confirmed that community resistances of main ecological clusters were positively correlated with ecosystem functional stability. Together, our results provide new insights into the link between community resistance and functional stability, and highlight the importance of core microbiota in driving community resistance to environmental stresses and maintain functional stability. [Display omitted] •Mercury had adverse effects on soil community resistance and functional stability.•Microbial community resistance was positively correlated with functional stability.•Core taxa drove the relationship of community resistance and functional stability.•Ecological cluster resistance was positively correlated with functional stability.
ISSN:0048-9697
1879-1026
DOI:10.1016/j.scitotenv.2023.165056