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The environment dri...
The environment drives microbial trait variability in aquatic habitats
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- Beier, S. (author)
- Leibniz Inst Baltic Sea Res Warnemunde IOW, Biol Oceanog, Rostock, Germany.;Sorbonne Univ, Observ Oceanol Banyuls, Lab Oceanog Microbienne LOMIC, CNRS, Banyuls Sur Mer, France.
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- Andersson, Anders (author)
- KTH,Genteknologi,Science for Life Laboratory, SciLifeLab,KTH Royal Inst Technol, Sch Engn Sci Chem Biotechnol & Hlth, Dept Gene Technol, Sci Life Lab, Stockholm, Sweden.
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- Galand, P. E. (author)
- Sorbonne Univ, Observ Oceanol Banyuls, Lab Ecogeochim Environm Benth LECOB, CNRS, Banyuls Sur Mer, France.
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- Hochart, C. (author)
- Sorbonne Univ, Observ Oceanol Banyuls, Lab Ecogeochim Environm Benth LECOB, CNRS, Banyuls Sur Mer, France.
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- Logue, Jürg Brendan (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Uppsala universitet,Limnologi,Bibliotek,Library,Uppsala University
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- McMahon, K. (author)
- Univ Wisconsin, Dept Civil & Environm Engn, Madison, WI 53706 USA.;Univ Wisconsin, Dept Bacteriol, Madison, WI 53706 USA.
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- Bertilsson, S. (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för vatten och miljö,Department of Aquatic Sciences and Assessment
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Leibniz Inst Baltic Sea Res Warnemunde IOW, Biol Oceanog, Rostock, Germany;Sorbonne Univ, Observ Oceanol Banyuls, Lab Oceanog Microbienne LOMIC, CNRS, Banyuls Sur Mer, France. Genteknologi (creator_code:org_t)
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- 2020-10-18
- 2020
- English.
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In: Molecular Ecology. - : Wiley. - 0962-1083 .- 1365-294X.
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Abstract
Subject headings
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- A prerequisite to improve the predictability of microbial community dynamics is to understand the mechanisms of microbial assembly. To study factors that contribute to microbial community assembly, we examined the temporal dynamics of genes in five aquatic metagenome time-series, originating from marine offshore or coastal sites and one lake. With this trait-based approach we expected to find gene-specific patterns of temporal allele variability that depended on the seasonal metacommunity size of carrier-taxa and the variability of the milieu and the substrates to which the resulting proteins were exposed. In more detail, we hypothesized that a larger seasonal metacommunity size would result in increased temporal variability of functional units (i.e., gene alleles), as shown previously for taxonomic units. We further hypothesized that multicopy genes would feature higher temporal variability than single-copy genes, as gene multiplication can result from high variability in substrate quality and quantity. Finally, we hypothesized that direct exposure of proteins to the extracellular environment would result in increased temporal variability of the respective gene compared to intracellular proteins that are less exposed to environmental fluctuations. The first two hypotheses were confirmed in all data sets, while significant effects of the subcellular location of gene products was only seen in three of the five time-series. The gene with the highest allele variability throughout all data sets was an iron transporter, also representing a target for phage infection. Previous work has emphasized the role of phage–prokaryote interactions as a major driver of microbial diversity. Our finding therefore points to a potentially important role of iron transporter-mediated phage infections for the assembly and maintenance of diversity in aquatic prokaryotes.
Subject headings
- NATURVETENSKAP -- Biologi -- Mikrobiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Microbiology (hsv//eng)
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
Keyword
- community ecology
- ecological genetics
- marine environments
- metagenomics
- microbial ecology
- time-series
Publication and Content Type
- ref (subject category)
- art (subject category)
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