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

John Davison Mari Moora 1 Marina Semchenko 2 Sakeenah Binte Adenan Talaat Ahmed Asem A. Akhmetzhanova Juha M. Alatalo Saleh Al-Quraishy Elena Andriyanova Sten Anslan 3 Mohammad Bahram 4 Amgaa Batbaatar Charlotte Brown C. Guillermo Bueno 5 James Cahill Juan Jose Cantero Brenda B. Casper Mikhail Cherosov 6, 7 Saida Chideh 8 Ana P. Coelho Matthew Coghill Guillaume Decocq 8 Sergey Dudov Ezequiel Chimbioputo Fabiano Vladimir E. Fedosov 9 Lauchlan Fraser 10 Sydney I. Glassman Aveliina Helm 1 Hugh A. L. Henry Bruno Herault 11, 12, 13 Indrek Hiiesalu Inga Hiiesalu 14, 15 Wael N. Hozzein Petr Kohout Urmas Koljalg 1 Kadri Koorem 15 Lauri Laanisto 16 Ulo Mander 1 Ladislav Mucina 17 Jean-Pierre Munyampundu Lena Neuenkamp 18 Ulo Niinemets 16, 19 Casper Nyamukondiwa 20 Jane Oja Vladimir Onipchenko 9 Meelis Partel 21 Cherdchai Phosri 22 Sergei Polme 23 Kersti Pussa Argo Ronk Alessandro Saitta Olivia Semboli Siim-Kaarel Sepp Alexey Seregin Surya Sudheer Clara P. Pena-Venegas Claudia Paz Tanel Vahter 1 Martti Vasar 1 Annelies J. Veraart Leho Tedersoo 1 Martin Zobel 1 Maarja Opik 24 
Abstract : 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.
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Soumis le : mardi 22 mars 2022 - 15:49:26
Dernière modification le : mardi 20 septembre 2022 - 15:38:06

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John Davison, Mari Moora, Marina Semchenko, Sakeenah Binte Adenan, Talaat Ahmed, et al.. Temperature and pH define the realised niche space of arbuscular mycorrhizal fungi. New Phytologist, 2021, 231 (2), pp.763-776. ⟨10.1111/nph.17240⟩. ⟨hal-03616517⟩



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