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Published on: July 3, 2016
Mobile genetic elements shape microbial diversity and functions in thawing permafrost soils
Jiarong Guo1,2,3, Samuel T N Aroney4, Guillermo Domínguez-Huerta1,2,5
1Department of Microbiology, The Ohio State University, Columbus, OH, USA.
Nature Microbiology
|June 29, 2026
Summary
Mobile genetic elements (MGEs) actively shape microbial communities in thawing permafrost ecosystems. This study reveals their significant role in gene transfer and functional diversity within these climate-critical environments.
Area of Science:
- Microbiology
- Genomics
- Ecology
Background:
- Microbial communities drive ecosystem functions through gene gains and losses.
- Mobile genetic elements (MGEs) are known to mediate gene flux, but their role in natural systems is underquantified.
Purpose of the Study:
- To systematically investigate MGEs in a natural soil environment using a meta-omic framework.
- To assess the ecological distribution, functions, mobility, and activity of MGEs in a thawing permafrost peatland.
Main Methods:
- Developed and applied a novel meta-omic framework.
- Analyzed an 8-year soil time series from Stordalen Mire, Sweden.
- Identified MGE recombinases across microbial phyla and assessed their ecological impact.
Main Results:
- Identified approximately 2.1 million MGE recombinases across 89 microbial phyla.
- Revealed an active mobilome significantly influencing genetic diversity and microbial functions.
- Demonstrated MGEs impact key functions, including carbon flux and nutrient cycling.
Conclusions:
- The mobilome actively shapes natural genetic diversity and ecosystem functions in thawing permafrost.
- The developed meta-omic framework provides new insights into MGEs in complex natural systems.
- Further research can leverage this framework to understand MGEs across diverse ecosystems.
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