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RESEARCH PRODUCT

Temperature and pH define the realised niche space of arbuscular mycorrhizal fungi

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Made available in DSpace on 2021-06-25T11:52:41Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-03-04 European Regional Development Fund (Centre of Excellence EcolChange) University of Tartu (Estonian Research Council ) Moscow State University Natural Sciences and Engineering Research Council of Canada Discovery Grant Russian Science Foundation Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Swedish Research Council (Vetenskapsradet) The arbuscular mycorrhizal (AM) fungi are a globally distributed group of soil organisms that play critical roles in ecosystem function. However, the ecological niches of individual AM fungal taxa are poorly understood. We collected > 300 soil samples from natural ecosystems worldwide and modelled the realised niches of AM fungal virtual taxa (VT; approximately species-level phylogroups). We found that environmental and spatial variables jointly explained VT distribution worldwide, with temperature and pH being the most important abiotic drivers, and spatial effects generally occurring at local to regional scales. While dispersal limitation could explain some variation in VT distribution, VT relative abundance was almost exclusively driven by environmental variables. Several environmental and spatial effects on VT distribution and relative abundance were correlated with phylogeny, indicating that closely related VT exhibit similar niche optima and widths. Major clades within the Glomeraceae exhibited distinct niche optima, Acaulosporaceae generally had niche optima in low pH and low temperature conditions, and Gigasporaceae generally had niche optima in high precipitation conditions. Identification of the realised niche space occupied by individual and phylogenetic groups of soil microbial taxa provides a basis for building detailed hypotheses about how soil communities respond to gradients and manipulation in ecosystems worldwide. Univ Tartu, Inst Ecol & Earth Sci, EE-51005 Tartu, Estonia Univ Manchester, Sch Earth & Environm Sci, Manchester M13 9PL, Lancs, England Qatar Univ, Environm Sci Ctr, Doha 2713, Qatar Moscow Lomonsov State Univ, Dept Ecol & Plant Geog, Fac Biol, Moscow 119991, Russia King Saud Univ, Zool Dept, Coll Sci, Riyadh 11451, Saudi Arabia Russian Acad Sci, Inst Biol Problems, North Far East Branch, Magadan 685000, Russia Swedish Univ Agr Sci, Dept Ecol, S-75651 Uppsala, Sweden Univ Alberta, Dept Biol Sci, Edmonton, AB T6G 2E9, Canada Univ Nacl Cordoba, Inst Multidisciplinario Biol Vegetal, CONICET, X5000HUA, Cordoba, Argentina Univ Nacl Rio Cuarto, Fac Agron & Vet, Dept Biol Agr, X5804BYA, Cordoba, Argentina Univ Penn, Dept Biol, Philadelphia, PA 19104 USA Russian Acad Sci, Inst Biol Problems Cryolithozone, Siberian Branch, Yakutsk 677000, Russia Univ Djibouti, Dept Rech Sci Environm, Private Bag 1904, Djibouti, Djibouti Univ Aveiro, Dept Biol, P-3810193 Aveiro, Portugal Univ Aveiro, CESAM, P-3810193 Aveiro, Portugal Thompson Rivers Univ, Dept Nat Resource Sci, Kamloops, BC V2C 0C8, Canada Jules Verne Univ Picardie, Ecol & Dynam Syst Anthropises, F-80037 Amiens, France Univ Namibia, Dept Wildlife Management & Ecotourism, Private Bag 1096, Katima Mulilo, Namibia RAS, FEB, Bot Garden Inst, Vladivostok 690024, Russia Univ Calif Riverside, Dept Microbiol & Plant Pathol, Riverside, CA 92521 USA Univ Western Ontario, Dept Biol, London, ON N6A 5B7, Canada UPR Forets & Societes, CIRAD, Yamoussoukro, Cote Ivoire Univ Montpellier, Forets & Societes, CIRAD, F-34000 Montpellier, France INP HB, Inst Natl Polytech Felix Houphouet Boigny, Yamoussoukro, Cote Ivoire Beni Suef Univ, Bot & Microbiol Dept, Fac Sci, Bani Suwayf 62511, Egypt Czech Acad Sci, Inst Microbiol, Prague 14220, Czech Republic Charles Univ Prague, Dept Expt Plant Biol, Fac Sci, Prague 12843, Czech Republic Estonian Univ Life Sci, Chair Biodivers & Nat Tourism, EE-51006 Tartu, Estonia Murdoch Univ, Harry Butler Inst, Iluka Chair Vegetat Sci & Biogeog, Perth, WA 6150, Australia Stellenbosch Univ, Dept Geog & Environm Studies, ZA-7602 Stellenbosch, South Africa Univ Rwanda, Sch Sci, Coll Sci & Technol, Kigali 3900, Rwanda Univ Bern, Inst Plant Sci, CH-3013 Bern, Switzerland Estonian Univ Life Sci, Chair Crop Sci & Plant Biol, EE-51006 Tartu, Estonia Botswana Int Univ Sci & Technol, Dept Biol Sci & Biotechnol, Private Bag 16, Palapye, Botswana Nakhon Phanom Univ, Dept Biol, Nakhon Phanom 48000, Thailand Univ Tartu, Nat Hist Museum, EE-51014 Tartu, Estonia Univ Palermo, Dept Agr Food & Forest Sci, I-90128 Palermo, Italy Univ Bangui, Ctr Studies & Res Pharmacopoeia & Tradit African, Bangui, Cent Afr Republ Inst Amazon Invest Cient Sinchi, Leticia 910001, Amazonas, Colombia Univ Estadual Paulista, Dept Biodivers, BR-13506900 Sao Paulo, Brazil Radboud Univ Nijmegen, Inst Water & Wetland Res, Dept Aquat Ecol & Environm Biol, NL-6525 AJ Nijmegen, Netherlands Univ Tartu, Dept Bot, EE-51005 Tartu, Estonia Univ Estadual Paulista, Dept Biodivers, BR-13506900 Sao Paulo, Brazil University of Tartu: PLTOM20903 (Estonian Research Council ): MOBTP 105 (Estonian Research Council ): MOBERC20 (Estonian Research Council ): PRG352 (Estonian Research Council ): PRG609 (Estonian Research Council ): PRG 1065 (Estonian Research Council ): PRG 1170 (Estonian Research Council ): PRG 1409 Moscow State University: AAAA-A16-116021660039-1 Russian Science Foundation: 19-14-00038 FAPESP: 2016/25197-0 Swedish Research Council (Vetenskapsradet): 2017-05019 Swedish Research Council (Vetenskapsradet): QUEX-CAS-QP-RD-18/19