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Updated: May 2, 2026
10:31
Isolation and Analysis of Microbial Communities in Soil, Rhizosphere, and Roots in Perennial Grass Experiments
Published on: July 24, 2018
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Soil bacterial community succession during long-term ecosystem development.
Molecular Ecology
|March 14, 2014
Summary
Soil bacterial communities change significantly with long-term ecosystem development, particularly in the first 1000 years. These shifts align with plant succession and soil formation, supporting a plant-microbial feedback model.
Area of Science:
- Ecology
- Soil Science
- Microbiology
Background:
- Soil and vegetation undergo significant changes during ecosystem development.
- Understanding microbial community dynamics is crucial for comprehending ecosystem succession.
Purpose of the Study:
- To investigate patterns of soil bacterial community change along a long-term ecosystem development gradient.
- To test the alignment of bacterial community shifts with pedogenesis and vegetative succession.
- To explore the relationship between bacterial communities and ecosystem development models.
Main Methods:
- Utilized the Franz Josef chrono sequence in New Zealand, spanning 60 to 120,000 years.
- Conducted pyrosequencing of soil-derived 16S rRNA genes across nine stages of ecosystem development.
- Applied Bray–Curtis ordination and Mantel tests to analyze bacterial community structure and its correlation with environmental factors.
Main Results:
- Bacterial communities exhibited clear patterns of change strongly correlated with ecosystem development, pedogenesis, and vegetative succession (Mantel test; r = 0.58; P < 0.001).
- 80% of bacterial community structure variability occurred within the first 1000 years, accompanied by a sharp decline in bacterial richness.
- Observed community turnover supports a 'plant–microbial successional feedback' model, with distinct feedback mechanisms during progression and retrogression.
Conclusions:
- This study provides the first evidence of soil bacterial community change linked to long-term ecosystem development using deep sequencing.
- The findings support a hypothesized model integrating below-ground microbial communities with above-ground ecosystem development and succession.
- Further research is needed to elucidate the precise mechanisms linking bacterial community changes to primary ecosystem succession.
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