Soil microbial communities associated with giant sequoia: How does the world's largest tree affect some of the world's smallest organisms?
| Autor: | Thomas D. Bruns, Sydney I. Glassman, Stephen C. Hart, Emma L. Aronson, Chelsea J. Carey |
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| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Sequoiadendron giganteum Sequoia Bulk soil Biology 010603 evolutionary biology 01 natural sciences 03 medical and health sciences food Pinus lambertiana lcsh:QH540-549.5 next-generation amplicon sequencing Sequoiadendron Sierra Nevada bacteria Relative species abundance Ecology Evolution Behavior and Systematics Original Research 030304 developmental biology Nature and Landscape Conservation Evolutionary Biology 0303 health sciences Ecology National park biology.organism_classification next‐generation amplicon sequencing food.food Hygrocybe lcsh:Ecology fungi Species richness |
| Zdroj: | Ecology and evolution, vol 10, iss 13 Ecology and Evolution, Vol 10, Iss 13, Pp 6593-6609 (2020) Ecology and Evolution |
| ISSN: | 2045-7758 |
| Popis: | Giant sequoia (Sequoiadendron giganteum) is an iconic conifer that lives in relict populations on the western slopes of the California Sierra Nevada. In these settings, it is unusual among the dominant trees in that it associates with arbuscular mycorrhizal fungi rather than ectomycorrhizal fungi. However, it is unclear whether differences in microbial associations extend more broadly to nonmycorrhizal components of the soil microbial community. To address this question, we used next‐generation amplicon sequencing to characterize bacterial/archaeal and fungal microbiomes in bulk soil (0–5 cm) beneath giant sequoia and co‐occurring sugar pine (Pinus lambertiana) individuals. We did this across two groves with distinct parent material in Yosemite National Park, USA. We found tree‐associated differences were apparent despite a strong grove effect. Bacterial/archaeal richness was greater beneath giant sequoia than sugar pine, with a core community double the size. The tree species also harbored compositionally distinct fungal communities. This pattern depended on grove but was associated with a consistently elevated relative abundance of Hygrocybe species beneath giant sequoia. Compositional differences between host trees correlated with soil pH and soil moisture. We conclude that the effects of giant sequoia extend beyond mycorrhizal mutualists to include the broader community and that some but not all host tree differences are grove‐dependent. Giant sequoia (Sequoiadendron giganteum) is an iconic conifer that lives in relict populations on the western slopes of the California Sierra Nevada. In these settings, it is unusual among the dominant trees in that it associates with arbuscular mycorrhizal fungi rather than ectomycorrhizal fungi. We found that the effects of giant sequoia extend beyond mycorrhizal mutualists to include the broader community and that some but not all host tree differences are grove‐dependent. |
| Databáze: | OpenAIRE |
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