Related Experiment Video
Updated: Aug 12, 2026
09:17
Investigation of Plant Interactions Across Common Mycorrhizal Networks Using Rotated Cores
Published on: March 26, 2019
Mycorrhizal symbioses and Arctic shrubification
Kevin K Newsham1, Peter Convey1,2,3
1NERC British Antarctic Survey, High Cross, Madingley Road, Cambridge CB3 0ET, United Kingdom.
Sustainable Microbiology
|August 11, 2026
Summary
Arctic shrubification relies on symbiotic fungi in plant roots. These mycorrhizal fungi enhance nitrogen uptake, crucial for shrub growth in tundra soils, though warming may alter fungal communities.
Area of Science:
- Arctic ecology
- Plant-soil interactions
- Mycology
Background:
- Arctic tundra soils are nitrogen-limited, impacting plant growth.
- Shrubification, or increased shrub cover, is a key change in the Arctic.
- Both deciduous and evergreen shrubs form mycorrhizal symbioses.
Purpose of the Study:
- To review the role of ectomycorrhizal and ericoid mycorrhizal symbioses in Arctic shrubification.
- To focus on how these symbioses affect shrub nitrogen acquisition in tundra soils.
Main Methods:
- Literature review of mycorrhizal symbioses and shrubification.
- Analysis of experimental warming effects on ectomycorrhizal fungal communities.
Main Results:
- Mycorrhizal symbioses enhance shrub nitrogen (N) acquisition through increased fungal presence, enzyme activity, and hyphal access to N.
- Experimental warming reduced fungal taxonomic richness by 20% but did not affect fungal abundances.
- Warming effects on mycorrhizas were most significant in mesic soils.
Conclusions:
- Ectomycorrhizal and ericoid mycorrhizal symbioses are likely drivers of Arctic shrubification.
- Further research is required to elucidate the precise mechanisms by which these symbioses influence shrubification.
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