High level of intergenera gene exchange shapes the evolution of haloarchaea in an isolated Antarctic lake
Horizontal gene exchange across species boundaries is considered infrequent relative to vertical inheritance that maintains species coherence. However, haloarchaea living in hypersaline environments take a more relaxed approach to gene exchange. Here we demonstrate that in Deep Lake, Antarctica, hal...
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ftpubmed:oai:pubmedcentral.nih.gov:3801024 2023-05-15T13:54:48+02:00 High level of intergenera gene exchange shapes the evolution of haloarchaea in an isolated Antarctic lake DeMaere, Matthew Z. Williams, Timothy J. Allen, Michelle A. Brown, Mark V. Gibson, John A. E. Rich, John Lauro, Federico M. Dyall-Smith, Michael Davenport, Karen W. Woyke, Tanja Kyrpides, Nikos C. Tringe, Susannah G. Cavicchioli, Ricardo 2013-10-15 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3801024 http://www.ncbi.nlm.nih.gov/pubmed/24082106 https://doi.org/10.1073/pnas.1307090110 en eng National Academy of Sciences http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3801024 http://www.ncbi.nlm.nih.gov/pubmed/24082106 http://dx.doi.org/10.1073/pnas.1307090110 Biological Sciences Text 2013 ftpubmed https://doi.org/10.1073/pnas.1307090110 2014-04-20T00:32:08Z Horizontal gene exchange across species boundaries is considered infrequent relative to vertical inheritance that maintains species coherence. However, haloarchaea living in hypersaline environments take a more relaxed approach to gene exchange. Here we demonstrate that in Deep Lake, Antarctica, haloarchaea exchange DNA between distinct genera, not just species, with some of the DNA being long (up to 35 kb) and virtually 100% conserved. With extremely low cell division rates in the cold (e.g., six generations per year), the remarkable extent of lateral exchange could conceivably homogenize the population. It is therefore equally notable that despite the demonstrated capacity for exchange, different genera are maintained, their coexistence being linked to genomic differences conferring ecotype distinctions that enable niche adaptation. Text Antarc* Antarctic Antarctica PubMed Central (PMC) Antarctic Proceedings of the National Academy of Sciences 110 42 16939 16944 |
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Biological Sciences |
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Biological Sciences DeMaere, Matthew Z. Williams, Timothy J. Allen, Michelle A. Brown, Mark V. Gibson, John A. E. Rich, John Lauro, Federico M. Dyall-Smith, Michael Davenport, Karen W. Woyke, Tanja Kyrpides, Nikos C. Tringe, Susannah G. Cavicchioli, Ricardo High level of intergenera gene exchange shapes the evolution of haloarchaea in an isolated Antarctic lake |
topic_facet |
Biological Sciences |
description |
Horizontal gene exchange across species boundaries is considered infrequent relative to vertical inheritance that maintains species coherence. However, haloarchaea living in hypersaline environments take a more relaxed approach to gene exchange. Here we demonstrate that in Deep Lake, Antarctica, haloarchaea exchange DNA between distinct genera, not just species, with some of the DNA being long (up to 35 kb) and virtually 100% conserved. With extremely low cell division rates in the cold (e.g., six generations per year), the remarkable extent of lateral exchange could conceivably homogenize the population. It is therefore equally notable that despite the demonstrated capacity for exchange, different genera are maintained, their coexistence being linked to genomic differences conferring ecotype distinctions that enable niche adaptation. |
format |
Text |
author |
DeMaere, Matthew Z. Williams, Timothy J. Allen, Michelle A. Brown, Mark V. Gibson, John A. E. Rich, John Lauro, Federico M. Dyall-Smith, Michael Davenport, Karen W. Woyke, Tanja Kyrpides, Nikos C. Tringe, Susannah G. Cavicchioli, Ricardo |
author_facet |
DeMaere, Matthew Z. Williams, Timothy J. Allen, Michelle A. Brown, Mark V. Gibson, John A. E. Rich, John Lauro, Federico M. Dyall-Smith, Michael Davenport, Karen W. Woyke, Tanja Kyrpides, Nikos C. Tringe, Susannah G. Cavicchioli, Ricardo |
author_sort |
DeMaere, Matthew Z. |
title |
High level of intergenera gene exchange shapes the evolution of haloarchaea in an isolated Antarctic lake |
title_short |
High level of intergenera gene exchange shapes the evolution of haloarchaea in an isolated Antarctic lake |
title_full |
High level of intergenera gene exchange shapes the evolution of haloarchaea in an isolated Antarctic lake |
title_fullStr |
High level of intergenera gene exchange shapes the evolution of haloarchaea in an isolated Antarctic lake |
title_full_unstemmed |
High level of intergenera gene exchange shapes the evolution of haloarchaea in an isolated Antarctic lake |
title_sort |
high level of intergenera gene exchange shapes the evolution of haloarchaea in an isolated antarctic lake |
publisher |
National Academy of Sciences |
publishDate |
2013 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3801024 http://www.ncbi.nlm.nih.gov/pubmed/24082106 https://doi.org/10.1073/pnas.1307090110 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3801024 http://www.ncbi.nlm.nih.gov/pubmed/24082106 http://dx.doi.org/10.1073/pnas.1307090110 |
op_doi |
https://doi.org/10.1073/pnas.1307090110 |
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Proceedings of the National Academy of Sciences |
container_volume |
110 |
container_issue |
42 |
container_start_page |
16939 |
op_container_end_page |
16944 |
_version_ |
1766260936207761408 |