Marine Sediments Illuminate Chlamydiae Diversity and Evolution
International audience 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...
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Online Access: | https://hal.science/hal-03368662 https://doi.org/10.1016/j.cub.2020.02.016 |
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ftunivnantes:oai:HAL:hal-03368662v1 2023-05-15T15:09:27+02:00 Marine Sediments Illuminate Chlamydiae Diversity and Evolution Dharamshi, Jennah Tamarit, Daniel Eme, Laura Stairs, Courtney Martijn, Joran Homa, Felix Jørgensen, Steffen Spang, Anja Ettema, Thijs J.G. Uppsala University Wageningen University and Research Wageningen (WUR) Ecologie Systématique et Evolution (ESE) AgroParisTech-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) University of Bergen (UiB) Royal Netherlands Institute for Sea Research (NIOZ) European Project: 625521,EC:FP7:PEOPLE,FP7-PEOPLE-2013-IEF,ENIGMAARCHAEA(2014) European Project: 704263,H2020,H2020-MSCA-IF-2015,Gap2bridge 2020-03 https://hal.science/hal-03368662 https://doi.org/10.1016/j.cub.2020.02.016 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.cub.2020.02.016 info:eu-repo/semantics/altIdentifier/pmid/32142706 info:eu-repo/grantAgreement/EC/FP7/625521/EU/Shedding light on the diversity, ecology and evolution of enigmatic, uncultivated archaea using novel single cell and metagenomics approaches/ENIGMAARCHAEA info:eu-repo/grantAgreement//704263/EU/Bridging the gap: an evolutionary genomics approach to illuminate the prokaryote-to-eukaryote transition./Gap2bridge hal-03368662 https://hal.science/hal-03368662 doi:10.1016/j.cub.2020.02.016 PUBMED: 32142706 WOS: 000522553700028 ISSN: 0960-9822 EISSN: 1879-0445 Current Biology - CB https://hal.science/hal-03368662 Current Biology - CB, 2020, 30 (6), pp.1032-+. ⟨10.1016/j.cub.2020.02.016⟩ [SDV]Life Sciences [q-bio] [SDV.BBM]Life Sciences [q-bio]/Biochemistry Molecular Biology info:eu-repo/semantics/article Journal articles 2020 ftunivnantes https://doi.org/10.1016/j.cub.2020.02.016 2023-02-22T02:53:25Z International audience 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. Article in Journal/Newspaper Arctic Université de Nantes: HAL-UNIV-NANTES Arctic Current Biology 30 6 1032 1048.e7 |
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Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
[SDV]Life Sciences [q-bio] [SDV.BBM]Life Sciences [q-bio]/Biochemistry Molecular Biology |
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[SDV]Life Sciences [q-bio] [SDV.BBM]Life Sciences [q-bio]/Biochemistry Molecular Biology Dharamshi, Jennah Tamarit, Daniel Eme, Laura Stairs, Courtney Martijn, Joran Homa, Felix Jørgensen, Steffen Spang, Anja Ettema, Thijs J.G. Marine Sediments Illuminate Chlamydiae Diversity and Evolution |
topic_facet |
[SDV]Life Sciences [q-bio] [SDV.BBM]Life Sciences [q-bio]/Biochemistry Molecular Biology |
description |
International audience 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. |
author2 |
Uppsala University Wageningen University and Research Wageningen (WUR) Ecologie Systématique et Evolution (ESE) AgroParisTech-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) University of Bergen (UiB) Royal Netherlands Institute for Sea Research (NIOZ) European Project: 625521,EC:FP7:PEOPLE,FP7-PEOPLE-2013-IEF,ENIGMAARCHAEA(2014) European Project: 704263,H2020,H2020-MSCA-IF-2015,Gap2bridge |
format |
Article in Journal/Newspaper |
author |
Dharamshi, Jennah Tamarit, Daniel Eme, Laura Stairs, Courtney Martijn, Joran Homa, Felix Jørgensen, Steffen Spang, Anja Ettema, Thijs J.G. |
author_facet |
Dharamshi, Jennah Tamarit, Daniel Eme, Laura Stairs, Courtney Martijn, Joran Homa, Felix Jørgensen, Steffen Spang, Anja Ettema, Thijs J.G. |
author_sort |
Dharamshi, Jennah |
title |
Marine Sediments Illuminate Chlamydiae Diversity and Evolution |
title_short |
Marine Sediments Illuminate Chlamydiae Diversity and Evolution |
title_full |
Marine Sediments Illuminate Chlamydiae Diversity and Evolution |
title_fullStr |
Marine Sediments Illuminate Chlamydiae Diversity and Evolution |
title_full_unstemmed |
Marine Sediments Illuminate Chlamydiae Diversity and Evolution |
title_sort |
marine sediments illuminate chlamydiae diversity and evolution |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://hal.science/hal-03368662 https://doi.org/10.1016/j.cub.2020.02.016 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
ISSN: 0960-9822 EISSN: 1879-0445 Current Biology - CB https://hal.science/hal-03368662 Current Biology - CB, 2020, 30 (6), pp.1032-+. ⟨10.1016/j.cub.2020.02.016⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.cub.2020.02.016 info:eu-repo/semantics/altIdentifier/pmid/32142706 info:eu-repo/grantAgreement/EC/FP7/625521/EU/Shedding light on the diversity, ecology and evolution of enigmatic, uncultivated archaea using novel single cell and metagenomics approaches/ENIGMAARCHAEA info:eu-repo/grantAgreement//704263/EU/Bridging the gap: an evolutionary genomics approach to illuminate the prokaryote-to-eukaryote transition./Gap2bridge hal-03368662 https://hal.science/hal-03368662 doi:10.1016/j.cub.2020.02.016 PUBMED: 32142706 WOS: 000522553700028 |
op_doi |
https://doi.org/10.1016/j.cub.2020.02.016 |
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Current Biology |
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30 |
container_issue |
6 |
container_start_page |
1032 |
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1048.e7 |
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