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Updated: Jun 27, 2025

Isolation and Analysis of Microbial Communities in Soil, Rhizosphere, and Roots in Perennial Grass Experiments

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Published on: July 24, 2018

Continuous cropping system altered soil microbial communities and nutrient cycles.

Mengjiao Ding^1,2,3,4, Huaxin Dai¹, Yi He⁵

¹Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, China.

Frontiers in Microbiology

|April 29, 2024

Summary

Long-term continuous cropping alters soil microbial communities. Soil properties like pH, nitrogen, and carbon content shift microbial composition, impacting agroecosystem sustainability.

Keywords:

continuous-cropping system environmental factors microbial community nutrient cycling rhizospheric soil

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Last Updated: Jun 27, 2025

Isolation and Analysis of Microbial Communities in Soil, Rhizosphere, and Roots in Perennial Grass Experiments

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Published on: July 24, 2018

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Published on: October 29, 2016

Area of Science:

Agricultural Science
Soil Microbiology
Ecology

Background:

Understanding soil microbial community dynamics is crucial for sustainable agroecosystems under continuous cropping.
Limited research exists on the interplay between soil physicochemical factors and microbial communities in continuously cropped systems.

Purpose of the Study:

To investigate the effects of long-term continuous cropping (0, 5, and 20 years) on soil physicochemical properties, metabolites, and microbial diversity in tobacco rhizosphere.
To identify key factors driving shifts in soil microbial community structure.

Main Methods:

Analysis of soil physicochemical properties (pH, AN, SOC).
Metabolomic profiling to identify key metabolites.
Assessment of microbial diversity using molecular techniques.

Main Results:

Continuous cropping increased the abundance of nutrient-cycling bacteria (e.g., Sphingomonas) and showed synergistic increases in plant pathogens and beneficial microorganisms.
Soil pH, alkaline nitrogen (AN), and soil organic carbon (SOC) content significantly influenced microbial community composition.
Specific metabolites (palmitic acid, 3-hydroxypropionic acid, stearic acid, hippuric acid) were linked to soil acidification.

Conclusions:

Long-term continuous cropping profoundly alters soil microbial communities and their functions.
Soil physicochemical properties are key drivers of these microbial shifts.
Findings provide insights for predicting microbial community changes and managing agroecosystems for sustainability.