Hierarchical phylogenetic community assembly of soil protists in a temperate agricultural field.

Autor: Roy J; Institut für Biologie, Ökologie der Pflanzen, Freie Universität Berlin, Berlin, Germany.; Berlin-Brandenburg Institute of Advanced Biodiversity Research (BBIB), Berlin, Germany., Mazel F; Department of Ecology and Evolution, University of Lausanne, Lausanne, Switzerland., Dumack K; Terrestrial Ecology Group, Institute of Zoology, University of Cologne, Cologne, Germany., Bonkowski M; Terrestrial Ecology Group, Institute of Zoology, University of Cologne, Cologne, Germany., Rillig MC; Institut für Biologie, Ökologie der Pflanzen, Freie Universität Berlin, Berlin, Germany.; Berlin-Brandenburg Institute of Advanced Biodiversity Research (BBIB), Berlin, Germany.
Jazyk: angličtina
Zdroj: Environmental microbiology [Environ Microbiol] 2022 Nov; Vol. 24 (11), pp. 5498-5508. Date of Electronic Publication: 2022 Aug 08.
DOI: 10.1111/1462-2920.16134
Abstrakt: Protists are abundant, diverse and perform essential functions in soils. Protistan community structure and its change across time or space are traditionally studied at the species level but the relative importance of the processes shaping these patterns depends on the taxon phylogenetic resolution. Using 18S rDNA amplicon data of the Cercozoa, a group of dominant soil protists, from an agricultural field in western Germany, we observed a turnover of relatively closely related taxa (from sequence variants to genus-level clades) across soil depth; while across soil habitats (rhizosphere, bulk soil, drilosphere), we observed turnover of relatively distantly related taxa, confirming Paracercomonadidae as a rhizosphere-associated clade. We extended our approach to show that closely related Cercozoa encounter divergent arbuscular mycorrhizal (AM) fungi across soil depth and that distantly related Cercozoa encounter closely related AM fungi across soil compartments. This study suggests that soil Cercozoa community assembly at the field scale is driven by niche-based processes shaped by evolutionary legacy of adaptation to conditions primarily related to the soil compartment, followed by the soil layer, giving a deeper understanding on the selection pressures that shaped their evolution.
(© 2022 The Authors. Environmental Microbiology published by Society for Applied Microbiology and John Wiley & Sons Ltd.)
Databáze: MEDLINE
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