Abstract
Purpose
Grazing is a traditional way of grassland management in Inner Mongolia of China. Despite important roles of arbuscular mycorrhizal fungal (AMF) communities in grassland ecosystems, few studies have specifically focused on the effects of grazing on AMF communities in grassland, particularly at regional level.
Methods
High-throughput sequencing technology was used to evaluate the effects of grazing on AMF communities along a 700-km transect that was characterized by a precipitation gradient and comprised of 10 pairs of ungrazed and grazed sites in temperate grasslands along the China-Mongolia border.
Results
Grazing significantly altered α and β diversity of AMF community along the precipitation gradient from southwest to northeast. α diversity of AMF community was positively correlated with plant species richness and percentage cover. Furthermore, α diversity of AMF community displayed a positive correlation with soil moisture and organic carbon but a negative correlation with pH. The response ratio of α diversity of AMF community displayed positive correlation with the response ratio of percentage cover. Analyses by db-RDA (distance-based redundancy analysis) and VPA (variance partitioning analysis) revealed that both vegetation and abiotic properties were involved in the grazing-induced changes in AMF communities.
Conclusions
AMF communities exhibited distinct biogeographical patterns across a precipitation gradient from southwest to northeast in northern China. Grazing led to significant changes in the diversity of AMF communities at regional level. Both vegetation and abiotic attributes were linked to grazing-induced changes in AMF community of the temperate steppes.
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Data availability
The data generated during the current study are included in this article and its supplementary information files.
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This research was funded by National Natural Science Foundation of China (31830011, 31870457) and the National Key Research and Development Program of China (2016YFC0500706).
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W.Z. and A.Y. conceived the ideas and designed methodology; A.Y., W. H., Y. L., X. Z., L. Z., M. Z. and L. R. collected and analysed the data; A.Y., W.Z. and Q.T. wrote the manuscript. All authors gave final approval for publication of the manuscript.
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Yang, A., Han, W., Li, Y. et al. Linkage of vegetation and abiotic attributes to grazing effects on biogeographical patterns of arbuscular mycorrhizal fungal communities in temperate grasslands. Plant Soil 478, 479–490 (2022). https://doi.org/10.1007/s11104-022-05483-5
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DOI: https://doi.org/10.1007/s11104-022-05483-5