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Vasar M, Davison J, Sepp SK, Oja J, Al-Quraishy S, Bueno CG, Cantero JJ, Fabiano EC, Decocq G, Fraser L, Hiiesalu I, Hozzein WN, Koorem K, Moora M, Mucina L, Onipchenko V, Öpik M, Pärtel M, Phosri C, Vahter T, Tedersoo L, Zobel M. Global taxonomic and phylogenetic assembly of AM fungi. MYCORRHIZA 2022; 32:135-144. [PMID: 35138435 DOI: 10.1007/s00572-022-01072-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 02/01/2022] [Indexed: 06/14/2023]
Abstract
Arbuscular mycorrhizal (AM) fungi are a ubiquitous group of plant symbionts, yet processes underlying their global assembly - in particular the roles of dispersal limitation and historical drivers - remain poorly understood. Because earlier studies have reported niche conservatism in AM fungi, we hypothesized that variation in taxonomic community composition (i.e., unweighted by taxon relatedness) should resemble variation in phylogenetic community composition (i.e., weighted by taxon relatedness) which reflects ancestral adaptations to historical habitat gradients. Because of the presumed strong dispersal ability of AM fungi, we also anticipated that the large-scale structure of AM fungal communities would track environmental conditions without regional discontinuity. We used recently published AM fungal sequence data (small-subunit ribosomal RNA gene) from soil samples collected worldwide to reconstruct global patterns in taxonomic and phylogenetic community variation. The taxonomic structure of AM fungal communities was primarily driven by habitat conditions, with limited regional differentiation, and there were two well-supported clusters of communities - occurring in cold and warm conditions. Phylogenetic structure was driven by the same factors, though all relationships were markedly weaker. This suggests that niche conservatism with respect to habitat associations is weakly expressed in AM fungal communities. We conclude that the composition of AM fungal communities tracks major climatic and edaphic gradients, with the effects of dispersal limitation and historic factors considerably less apparent than those of climate and soil.
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Affiliation(s)
- Martti Vasar
- Department of Botany, Institute of Ecology and Earth Sciences, University of Tartu, 2 Liivi St, 50409, Tartu, Estonia.
| | - John Davison
- Department of Botany, Institute of Ecology and Earth Sciences, University of Tartu, 2 Liivi St, 50409, Tartu, Estonia
| | - Siim-Kaarel Sepp
- Department of Botany, Institute of Ecology and Earth Sciences, University of Tartu, 2 Liivi St, 50409, Tartu, Estonia
| | - Jane Oja
- Department of Botany, Institute of Ecology and Earth Sciences, University of Tartu, 2 Liivi St, 50409, Tartu, Estonia
| | - Saleh Al-Quraishy
- Zoology Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - C Guillermo Bueno
- Department of Botany, Institute of Ecology and Earth Sciences, University of Tartu, 2 Liivi St, 50409, Tartu, Estonia
| | - Juan José Cantero
- CONICET, Instituto Multidisciplinario de Biología Vegetal, Universidad Nacional de Córdoba, Córdoba, Argentina
- Departamento de Biología Agrícola, Facultad de Agronomía Y Veterinaria, Universidad Nacional de Río Cuarto, Córdoba, Argentina
| | | | - Guillaume Decocq
- Ecologie et Dynamique des Systèmes Anthropisés, Jules Verne University of Picardie, Amiens, France
| | - Lauchlan Fraser
- Department of Natural Resource Sciences, Thompson Rivers University, Kamloops, BC, Canada
| | - Inga Hiiesalu
- Department of Botany, Institute of Ecology and Earth Sciences, University of Tartu, 2 Liivi St, 50409, Tartu, Estonia
| | - Wael N Hozzein
- Zoology Department, College of Science, King Saud University, Riyadh, Saudi Arabia
- Botany and Microbiology Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
| | - Kadri Koorem
- Department of Botany, Institute of Ecology and Earth Sciences, University of Tartu, 2 Liivi St, 50409, Tartu, Estonia
| | - Mari Moora
- Department of Botany, Institute of Ecology and Earth Sciences, University of Tartu, 2 Liivi St, 50409, Tartu, Estonia
| | - Ladislav Mucina
- Iluka Chair in Vegetation Science and Biogeography, Harry Butler Institute, Murdoch University, Murdoch, Perth, Australia
- Department of Geography and Environmental Studies, Stellenbosch University, Stellenbosch, South Africa
| | - Vladimir Onipchenko
- Department of Ecology and Plant Geography, Faculty of Biology, Moscow Lomonosov State University, Moscow, Russia
| | - Maarja Öpik
- Department of Botany, Institute of Ecology and Earth Sciences, University of Tartu, 2 Liivi St, 50409, Tartu, Estonia
| | - Meelis Pärtel
- Department of Botany, Institute of Ecology and Earth Sciences, University of Tartu, 2 Liivi St, 50409, Tartu, Estonia
| | - Cherdchai Phosri
- Department of Biology, Nakhon Phanom University, Nakhon Phanom, Thailand
| | - Tanel Vahter
- Department of Botany, Institute of Ecology and Earth Sciences, University of Tartu, 2 Liivi St, 50409, Tartu, Estonia
| | - Leho Tedersoo
- Zoology Department, College of Science, King Saud University, Riyadh, Saudi Arabia
- Mycology and Microbiology Center, University of Tartu, Tartu, Estonia
| | - Martin Zobel
- Zoology Department, College of Science, King Saud University, Riyadh, Saudi Arabia
- Department of Botany, University of Tartu, Tartu, Estonia
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