Abstract
Purpose
Elucidating the interactions of above- and below-ground communities in forest ecosystems is of great importance for comprehending biodiversity maintenance and ecosystem functioning.
Methods
In the context of a Biodiversity and Ecosystem Functioning experiment conducted in China (BEF-China), we explored the combined effects of tree species richness (1, 2, and 4) and shrub species richness (0, 2, 4, and 8) on soil fungal community diversity and structure under tree species with different mycorrhizal types (i.e., arbuscular mycorrhizal (AM) tree and ectomycorrhizal (EM) tree) using the Illumina sequencing method.
Results
Results demonstrated that the fungal alpha diversity, community composition and network structure were significantly different between EM trees and AM trees. Although tree and shrub species richness had no significant interactive effect on soil fungal alpha diversity regardless of tree mycorrhizal types, however, their interactions did influence fungal community composition and co-occurrence network structure. Specifically, the interactive effect of tree and shrub species richness on soil fungal community composition was observed in AM trees, and their interactions affected the soil fungal co-occurrence network structure in EM trees.
Conclusions
These findings highlight the tree mycorrhizal type dependence of the interactive effects of tree and shrub species richness on soil fungal communities in a subtropical forest.
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Data availability
The datasets generated for this study can be found in the National Centre for Biotechnology Information (NCBI) Sequence Read Archive (SRA) under bioproject Number PRJNA940324.
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Acknowledgements
Thanks to Tianhe Yu and Sirong Zhang for their help with sampling and Dr. Lifen Jiang for comments and English proofing. This research was financially supported by the Strategic Priority Research Program of the Chinese Academy of Sciences (XDB310304) and the National Key R&D Program of China (2022 YFF1303200).
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Naili Zhang and Laiye Qu designed the research; Haolei Xiong performed the analysis; Haolei Xiong, Naili Zhang and Laiye Qu wrote the first draft. Koike Takayoshi and Siqi Tao reviewed and edited the manuscript. All authors have read and agreed to this version of the manuscript.
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Xiong, H., Zhang, N., Takayoshi, K. et al. Tree mycorrhizal types and the interaction between tree and shrub species richness shape soil fungal communities in a subtropical forest in China. Plant Soil 493, 61–77 (2023). https://doi.org/10.1007/s11104-023-06211-3
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DOI: https://doi.org/10.1007/s11104-023-06211-3