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Marine Sediments Il...
Marine Sediments Illuminate Chlamydiae Diversity and Evolution
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- Dharamshi, Jennah E. (författare)
- Uppsala universitet,Molekylär evolution,Science for Life Laboratory, SciLifeLab
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- Tamarit, Daniel, 1988- (författare)
- Uppsala universitet,Molekylär evolution,Science for Life Laboratory, SciLifeLab,Wageningen Univ, Dept Agrotechnol & Food Sci, Lab Microbiol, NL-6708 WE Wageningen, Netherlands
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- Eme, Laura (författare)
- Uppsala universitet,Molekylär evolution,Science for Life Laboratory, SciLifeLab,Univ Paris Sud, CNRS, Unite Ecol Syst & Evolut, F-91400 Orsay, France
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- Stairs, Courtney W. (författare)
- Uppsala universitet,Molekylär evolution,Science for Life Laboratory, SciLifeLab
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- Martijn, Joran (författare)
- Uppsala universitet,Molekylär evolution,Science for Life Laboratory, SciLifeLab,Dalhousie Univ, Dept Biochem & Mol Biol, Halifax, NS B3H 4R2, Canada
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- Homa, Felix (författare)
- Uppsala universitet,Molekylär evolution,Science for Life Laboratory, SciLifeLab,Wageningen Univ, Dept Agrotechnol & Food Sci, Lab Microbiol, NL-6708 WE Wageningen, Netherlands
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- Jørgensen, Steffen L. (författare)
- Univ Bergen, Ctr Deep Sea Res, Dept Earth Sci, N-5020 Bergen, Norway
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- Spang, Anja (författare)
- Uppsala universitet,Molekylär evolution,Science for Life Laboratory, SciLifeLab,NIOZ Royal Netherlands Inst Sea Res, Dept Marine Microbiol & Biogeochem, NL-1790 AB Den Burg, Netherlands;Univ Utrecht, NL-1790 AB Den Burg, Netherlands
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- Ettema, Thijs J. G. (författare)
- Uppsala universitet,Molekylär evolution,Science for Life Laboratory, SciLifeLab,Wageningen Univ, Dept Agrotechnol & Food Sci, Lab Microbiol, NL-6708 WE Wageningen, Netherlands
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(creator_code:org_t)
- Elsevier BV, 2020
- 2020
- Engelska.
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Ingår i: Current Biology. - : Elsevier BV. - 0960-9822 .- 1879-0445. ; 30:6, s. 1032-1048.e7
- Relaterad länk:
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http://www.cell.com/...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- The bacterial phylum Chlamydiae is so far composed of obligate symbionts of eukaryotic hosts. Well known for Chlamydiaceae, pathogens of humans and other animals, Chlamydiae also include so-called environmental lineages that primarily infect microbial eukaryotes. Environmental surveys indicate that Chlamydiae are found in a wider range of environments than anticipated previously. However, the vast majority of this chlamydial diversity has been underexplored, biasing our current understanding of their biology, ecological importance, and evolution. Here, we report that previously undetected and active chlamydial lineages dominate microbial communities in deep anoxic marine sediments taken from the Arctic Mid-Ocean Ridge. Reaching relative abundances of up to 43% of the bacterial community, and a maximum diversity of 163 different species-level taxonomic units, these Chlamydiae represent important community members. Using genome-resolved metagenomics, we reconstructed 24 draft chlamydial genomes, expanding by over a third the known genomic diversity in this phylum. Phylogenomic analyses revealed several novel clades across the phylum, including a previously unknown sister lineage of the Chlamydiaceae, providing new insights into the origin of pathogenicity in this family. We were unable to identify putative eukaryotic hosts for these marine sediment chlamydiae, despite identifying genomic features that may be indicative of host-association. The high abundance and genomic diversity of Chlamydiae in these anoxic marine sediments indicate that some members could play an important, and thus far overlooked, ecological role in such environments and may indicate alternate lifestyle strategies.
Ämnesord
- NATURVETENSKAP -- Biologi -- Mikrobiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Microbiology (hsv//eng)
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Dharamshi, Jenna ...
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Tamarit, Daniel, ...
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Eme, Laura
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Stairs, Courtney ...
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Martijn, Joran
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Homa, Felix
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Jørgensen, Steff ...
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Spang, Anja
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Ettema, Thijs J. ...
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