Structure and function of the soil microbiome underlying N2O emissions from global wetlands

Bahram, Mohammad, Espenberg, Mikk, Pärn, Jaan, Lehtovirta-Morley, Laura, Anslan, Sten, Kasak, Kuno, Kõljalg, Urmas, Liira, Jaan, Maddison, Martin, Moora, Mari, Niinemets, Ülo, Öpik, Maarja, Pärtel, Meelis, Soosaar, Kaido, Zobel, Martin, Hildebrand, Falk, Tedersoo, Leho and Mander, Ülo (2022) Structure and function of the soil microbiome underlying N2O emissions from global wetlands. Nature Communications, 13 (1). ISSN 2041-1723

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Wetland soils are the greatest source of nitrous oxide (N2O), a critical greenhouse gas and ozone depleter released by microbes. Yet, microbial players and processes underlying the N2O emissions from wetland soils are poorly understood. Using in situ N2O measurements and by determining the structure and potential functional of microbial communities in 645 wetland soil samples globally, we examined the potential role of archaea, bacteria, and fungi in nitrogen (N) cycling and N2O emissions. We show that N2O emissions are higher in drained and warm wetland soils, and are correlated with functional diversity of microbes. We further provide evidence that despite their much lower abundance compared to bacteria, nitrifying archaeal abundance is a key factor explaining N2O emissions from wetland soils globally. Our data suggest that ongoing global warming and intensifying environmental change may boost archaeal nitrifiers, collectively transforming wetland soils to a greater source of N2O.

Item Type: Article
Additional Information: Acknowledgements: We thank O. Botsarova, L. Lopp, K. Kanger, R. Puusepp, E.J. Sova, H. Tamm, I. Varik for assistance in molecular laboratory analyses. We thank Lorenzo Menichetti for useful discussions. We are grateful to S. Egorov, I. Filippov, G. Gabiri, J. Gallagher, I. Gheorghe, W. Hartman, R. Iturraspe, J. Järveoja, A. Kull, F. Laggoun-Défarge, E. Lapshina, A. Lohila, C. Luswata, S. Mander, M. Metspalu, W. Mitsch, R. Moreton, K. Oopkaup, H. Óskarsson, J. Paal, T. Pae, E. Parrodi, S. Pellerin, F. Sabater, J. Salm; F. Sgouridis, D. Silveira Batista, K. Sohar, K. Storey, M. Tenywa; S. Ullah, E. Uuemaa, G. Veber, J. Villa, L. Yang and S.S. Zaw for assistance on study-site selection and field investigation. Funding: ME, JP, LT and UM were supported by the Ministry of Education and Science of Estonia (SF0180127s08 grant), the Estonian Research Council (IUT2-16, PUTJD619, PRG-352, PRG-609, and MOBERC20), EU through the European Regional Development Fund (Centres of Excellence ENVIRON, grant number TK-107, EcolChange, grant number TK-131, and the MOBTP101 returning researcher grant by the Mobilitas Pluss program); M.B. was supported by the Swedish Research Council Formas (2020-00807); J.P., K.K., and M.Ma. were supported by the European Social Fund (Doctoral School of Earth Sciences and Ecology); L.L.M. was supported by Royal Society Dorothy Hodgkin Research Fellowship (DH150187); F.H. was supported by European Research Council (ERC) Starting Grant (UNITY 852993), the BBSRC Institute Strategic Program Gut Microbes and Health BB/R012490/1, its constituent project BBS/E/F/000PR10355, the European Union’s Horizon 2020 research and innovation program (grant agreement no. 948219).
Uncontrolled Keywords: chemistry(all),biochemistry, genetics and molecular biology(all),physics and astronomy(all) ,/dk/atira/pure/subjectarea/asjc/1600
Faculty \ School: Faculty of Science > School of Biological Sciences
UEA Research Groups: Faculty of Science > Research Groups > Molecular Microbiology
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Depositing User: LivePure Connector
Date Deposited: 25 Mar 2022 13:27
Last Modified: 22 Oct 2022 17:38
DOI: 10.1038/s41467-022-29161-3

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