Microplastic polymer properties as deterministic factors driving terrestrial plastisphere microbiome assembly and succession in the field.

Autor: Rohrbach S; Institute of Microbiology, Leibniz University Hannover, Hannover, Germany., Gkoutselis G; Department of Mycology, University of Bayreuth, Bayreuth, Germany., Hink L; Institute of Microbiology, Leibniz University Hannover, Hannover, Germany., Weig AR; Genomics and Bioinformatics, University of Bayreuth, Bayreuth, Germany., Obst M; Experimental Biogeochemistry, BayCEER, University of Bayreuth, Bayreuth, Germany., Diekmann A; Deutsches Institut für Kautschuktechnologie e.V., Hannover, Germany., Ho A; Institute of Microbiology, Leibniz University Hannover, Hannover, Germany., Rambold G; Department of Mycology, University of Bayreuth, Bayreuth, Germany., Horn MA; Institute of Microbiology, Leibniz University Hannover, Hannover, Germany.
Jazyk: angličtina
Zdroj: Environmental microbiology [Environ Microbiol] 2023 Dec; Vol. 25 (12), pp. 2681-2697. Date of Electronic Publication: 2022 Oct 28.
DOI: 10.1111/1462-2920.16234
Abstrakt: Environmental microplastic (MP) is ubiquitous in aquatic and terrestrial ecosystems providing artificial habitats for microbes. Mechanisms of MP colonization, MP polymer impacts, and effects on soil microbiomes are largely unknown in terrestrial systems. Therefore, we experimentally tested the hypothesis that MP polymer type is an important deterministic factor affecting MP community assembly by incubating common MP polymer types in situ in landfill soil for 14 months. 16S rRNA gene amplicon sequencing indicated that MP polymers have specific impacts on plastisphere microbiomes, which are subsets of the soil microbiome. Chloroflexota, Gammaproteobacteria, certain Nitrososphaerota, and Nanoarchaeota explained differences among MP polymers and time points. Plastisphere microbial community composition derived from different MP diverged over time and was enriched in potential pathogens. PICRUSt predictions of pathway abundances and quantitative PCR of functional marker genes indicated that MP polymers exerted an ambivalent effect on genetic potentials of biogeochemical cycles. Overall, the data indicate that (i) polymer type as deterministic factor rather than stochastic factors drives plastisphere community assembly, (ii) MP impacts greenhouse gas metabolism, xenobiotic degradation and pathogen distribution, and (iii) MP serves as an ideal model system for studying fundamental questions in microbial ecology such as community assembly mechanisms in terrestrial environments.
(© 2022 The Authors. Environmental Microbiology published by Society for Applied Microbiology and John Wiley & Sons Ltd.)
Databáze: MEDLINE
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