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Updated: Aug 18, 2025
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A Lipid Extraction and Analysis Method for Characterizing Soil Microbes in Experiments with Many Samples
Published on: July 16, 2017
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Temporal dynamics of soil bacterial network regulate soil resistomes.
Qian Xiang1,2, Dong Zhu1,2, Min Qiao3
1Key Laboratory of Urban Environment and Health, Ningbo Urban Environment Observation and Research Station, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, China.
Environmental Microbiology
|December 8, 2022
Summary
Seasonal changes significantly impact soil bacterial networks and antibiotic resistance genes (ARGs). Bacterial network structures correlate with ARGs, offering insights into managing soil antibiotic resistance.
Area of Science:
- Environmental microbiology
- Soil ecology
- Microbial network analysis
Background:
- Soil bacteria form complex ecological networks crucial for soil functions.
- Seasonal variations and their impact on soil bacterial networks and antibiotic resistance genes (ARGs) are not well understood.
Purpose of the Study:
- To investigate the seasonal effects on soil bacterial ecological networks.
- To explore the relationship between bacterial network topology and soil resistomes.
- To understand the temporal dynamics of ARGs in soil.
Main Methods:
- Field investigation across four seasons at a watershed scale.
- Analysis of bacterial community co-occurrence networks.
- Examination of ARG co-occurrence networks and their topological features.
- Correlation analysis between bacterial network centrality and ARG abundance.
Main Results:
- Significant seasonal variations were observed in bacterial network complexity, stability, and niche breadth.
- ARG co-occurrence networks exhibited seasonal shifts, with higher node degrees in summer.
- Bacterial network topological features (betweenness, stress, degree, closeness centrality) strongly correlated with major ARG classes.
Conclusions:
- Seasonal changes alter soil bacterial network structures and influence antibiotic resistance.
- Bacterial network dynamics are linked to the temporal variations of ARGs in soil.
- Findings provide insights for managing soil antibiotic resistance in response to environmental changes.
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