Changes in soil fungal community composition depend on functional group and forest disturbance type
| Autor: | James F. Cahill, Nadir Erbilgin, Jean C. Rodriguez-Ramos, Suzanne W. Simard, Justine Karst, Jonathan A. Cale |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
0301 basic medicine Pinus contorta Bark beetle Physiology Plant Science Forests complex mixtures 01 natural sciences Soil 03 medical and health sciences chemistry.chemical_compound Nutrient Mycorrhizae Animals Dominance (ecology) Soil Microbiology Abiotic component Forest floor Ergosterol biology Ecology fungi Taiga Fungi Pinus biology.organism_classification 030104 developmental biology chemistry Mycobiome 010606 plant biology & botany |
| Zdroj: | New Phytologist. 229:1105-1117 |
| ISSN: | 1469-8137 0028-646X |
| Popis: | Disturbances have altered community dynamics in boreal forests with unknown consequences for belowground ecological processes. Soil fungi are particularly sensitive to such disturbances; however, the individual response of fungal guilds to different disturbance types is poorly understood. Here, we profiled soil fungal communities in lodgepole pine forests following a bark beetle outbreak, wildfire, clear-cut logging, and salvage-logging. Using Illumina MiSeq to sequence ITS1 and SSU rDNA, we characterized communities of ectomycorrhizal, arbuscular mycorrhizal, saprotrophic, and pathogenic fungi in sites representing each disturbance type paired with intact forests. We also quantified soil fungal biomass by measuring ergosterol. Abiotic disturbances changed the community composition of ectomycorrhizal fungi and shifted the dominance from ectomycorrhizal to saprotrophic fungi compared to intact forests. The disruption of the soil organic layer with disturbances correlated with the decline of ectomycorrhizal and the increase of arbuscular mycorrhizal fungi. Wildfire changed the community composition of pathogenic fungi but did not affect their proportion and diversity. Fungal biomass declined with disturbances that disrupted the forest floor. Our results suggest that the disruption of the forest floor with disturbances, and the changes in C and nutrient dynamics it may promote, structure the fungal community with implications for fungal biomass-C. |
| Databáze: | OpenAIRE |
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