What Drives the Assembly of Plant-associated Protist Microbiomes? Investigating the Effects of Crop Species, Soil Type and Bacterial Microbiomes.

Autor: Dumack K; University of Cologne, Institute of Zoology, Terrestrial Ecology, Zülpicher Str. 47b, 50674 Köln, Germany; Cluster of Excellence on Plant Sciences (CEPLAS), University of Cologne, Germany. Electronic address: kenneth.dumack@uni-koeln.de., Feng K; University of Cologne, Institute of Zoology, Terrestrial Ecology, Zülpicher Str. 47b, 50674 Köln, Germany; CAS Key Laboratory for Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China., Flues S; University of Cologne, Institute of Zoology, Terrestrial Ecology, Zülpicher Str. 47b, 50674 Köln, Germany; Cluster of Excellence on Plant Sciences (CEPLAS), University of Cologne, Germany., Sapp M; Cluster of Excellence on Plant Sciences (CEPLAS), Heinrich Heine University, Population Genetics, Universitätsstrasse 1, 40225 Düsseldorf, Germany., Schreiter S; Julius Kühn-Institut, Federal Research Centre for Cultivated Plants, Institute for Epidemiology and Pathogen Diagnostics, Messeweg 11-12, 38104 Braunschweig, Germany; Helmholtz Centre for Environmental Research GmbH (UFZ), Deptartment Soil System Science, Theodor-Lieser-Str.4, 06120 Halle, Germany., Grosch R; Leibniz Institute of Vegetable and Ornamental Crops (IGZ), Plant-Microbe Systems, Theodor-Echtermeyer-Weg 1, 14979 Großbeeren, Germany., Rose LE; Cluster of Excellence on Plant Sciences (CEPLAS), Heinrich Heine University, Population Genetics, Universitätsstrasse 1, 40225 Düsseldorf, Germany., Deng Y; CAS Key Laboratory for Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China., Smalla K; Julius Kühn-Institut, Federal Research Centre for Cultivated Plants, Institute for Epidemiology and Pathogen Diagnostics, Messeweg 11-12, 38104 Braunschweig, Germany., Bonkowski M; University of Cologne, Institute of Zoology, Terrestrial Ecology, Zülpicher Str. 47b, 50674 Köln, Germany; Cluster of Excellence on Plant Sciences (CEPLAS), University of Cologne, Germany.
Jazyk: angličtina
Zdroj: Protist [Protist] 2022 Dec; Vol. 173 (6), pp. 125913. Date of Electronic Publication: 2022 Sep 28.
DOI: 10.1016/j.protis.2022.125913
Abstrakt: In a field experiment we investigated the influence of the environmental filters soil type (i.e. three contrasting soils) and plant species (i.e. lettuce and potato) identity on rhizosphere community assembly of Cercozoa, a dominant group of mostly bacterivorous soil protists. Plant species (14%) and rhizosphere origin (vs bulk soil) with 13%, together explained four times more variation in cercozoan beta diversity than the three soil types (7% explained variation). Our results clearly confirm the existence of plant species-specific protist communities. Network analyses of bacteria-Cercozoa rhizosphere communities identified scale-free small world topologies, indicating mechanisms of self-organization. While the assembly of rhizosphere bacterial communities is bottom-up controlled through the resource supply from root (secondary) metabolites, our results support the hypothesis that the net effect may depend on the strength of top-down control by protist grazers. Since grazing of protists has a strong impact on the composition and functioning of bacteria communities, protists expand the repertoire of plant genes by functional traits, and should be considered as 'protist microbiomes' in analogy to 'bacterial microbiomes'.
(Copyright © 2022 The Authors. Published by Elsevier GmbH.. All rights reserved.)
Databáze: MEDLINE
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