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

Alessandro Saitta, Talaat Ahmed, Cherdchai Phosri, Marina Semchenko, Clara P. Peña-Venegas, Saleh Al-Quraishy, Martin Zobel, Claudia Paz, Sergei Põlme, Asem A. Akhmetzhanova, C. Guillermo Bueno, Casper Nyamukondiwa, Mohammad Bahram, Inga Hiiesalu, Kadri Koorem, Martti Vasar, Lena Neuenkamp, Petr Kohout, Ezequiel Chimbioputo Fabiano, Sydney I. GlassmanVladimir E. Fedosov, Argo Ronk, Olivia Semboli, Ladislav Mucina, Ülo Niinemets, Saida Chideh, Sten Anslan, Siim-Kaarel Sepp, Jean-Pierre Munyampundu, Lauri Laanisto, Sergey Dudov, Elena Andriyanova, Indrek Hiiesalu, James Cahill, Surya Sudheer, Amgaa Batbaatar, Tanel Vahter, Mikhail Cherosov, Sakeenah Binte Adenan, Matthew Coghill, Alexey Seregin, Ana P. Coelho, Annelies J. Veraart, Vladimir Onipchenko, Mari Moora, Juha M. Alatalo, Urmas Kõljalg, Meelis Pärtel, Jane Oja, Ülo Mander, Brenda B. Casper, Guillaume Decocq, Aveliina Helm, Juan José Cantero, Hugh A. L. Henry, Lauchlan Fraser, John Davison, Maarja Öpik, Wael N. Hozzein, Charlotte Brown, Leho Tedersoo, Bruno Hérault, Kersti Püssa

Risultato della ricerca: Articlepeer review

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.
Lingua originaleEnglish
pagine (da-a)763-776
Numero di pagine14
RivistaNew Phytologist
Volume231
Stato di pubblicazionePublished - 2021

All Science Journal Classification (ASJC) codes

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  • ???subjectarea.asjc.1100.1110???

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