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Structure and function of the global topsoil microbiome.
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för organismbiologi, Systematisk biologi.
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för organismbiologi, Systematisk biologi.ORCID-id: 0000-0002-0713-6897
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2018 (engelsk)Inngår i: Nature, ISSN 0028-0836, E-ISSN 1476-4687, Vol. 560, nr 7717, s. 233-237Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Soils harbour some of the most diverse microbiomes on Earth and are essential for both nutrient cycling and carbon storage. To understand soil functioning, it is necessary to model the global distribution patterns and functional gene repertoires of soil microorganisms, as well as the biotic and environmental associations between the diversity and structure of both bacterial and fungal soil communities1-4. Here we show, by leveraging metagenomics and metabarcoding of global topsoil samples (189 sites, 7,560 subsamples), that bacterial, but not fungal, genetic diversity is highest in temperate habitats and that microbial gene composition varies more strongly with environmental variables than with geographic distance. We demonstrate that fungi and bacteria show global niche differentiation that is associated with contrasting diversity responses to precipitation and soil pH. Furthermore, we provide evidence for strong bacterial-fungal antagonism, inferred from antibiotic-resistance genes, in topsoil and ocean habitats, indicating the substantial role of biotic interactions in shaping microbial communities. Our results suggest that both competition and environmental filtering affect the abundance, composition and encoded gene functions of bacterial and fungal communities, indicating that the relative contributions of these microorganisms to global nutrient cycling varies spatially.

sted, utgiver, år, opplag, sider
2018. Vol. 560, nr 7717, s. 233-237
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Identifikatorer
URN: urn:nbn:se:uu:diva-360977DOI: 10.1038/s41586-018-0386-6ISI: 000441115200048PubMedID: 30069051OAI: oai:DiVA.org:uu-360977DiVA, id: diva2:1249747
Forskningsfinansiär
Swedish Research Council, 2017-05019The Royal Swedish Academy of SciencesHelge Ax:son Johnsons stiftelse EU, Horizon 2020, 686070Tilgjengelig fra: 2018-09-20 Laget: 2018-09-20 Sist oppdatert: 2018-11-08bibliografisk kontrollert

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