Horizontal gene transfer and the evolution of bacterial and archaeal population structure
Many bacterial and archaeal lineages have a history of extensive and ongoing horizontal gene transfer and loss, as evidenced by the large differences in genome content even among otherwise closely related isolates. How ecologically cohesive populations might evolve and be maintained under such condi...
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| Format: | Article |
| Language: | en_US |
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Elsevier
2015
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| Online Access: | http://hdl.handle.net/1721.1/99217 https://orcid.org/0000-0001-8294-9364 https://orcid.org/0000-0001-9296-3733 |
| _version_ | 1826196949285470208 |
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| author | Polz, Martin F. Alm, Eric J. Hanage, William P. |
| author2 | Massachusetts Institute of Technology. Department of Biological Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Biological Engineering Polz, Martin F. Alm, Eric J. Hanage, William P. |
| author_sort | Polz, Martin F. |
| collection | MIT |
| description | Many bacterial and archaeal lineages have a history of extensive and ongoing horizontal gene transfer and loss, as evidenced by the large differences in genome content even among otherwise closely related isolates. How ecologically cohesive populations might evolve and be maintained under such conditions of rapid gene turnover has remained controversial. Here we synthesize recent literature demonstrating the importance of habitat and niche in structuring horizontal gene transfer. This leads to a model of ecological speciation via gradual genetic isolation triggered by differential habitat-association of nascent populations. Further, we hypothesize that subpopulations can evolve through local gene-exchange networks by tapping into a gene pool that is adaptive towards local, continuously changing organismic interactions and is, to a large degree, responsible for the observed rapid gene turnover. Overall, these insights help to explain how bacteria and archaea form populations that display both ecological cohesion and high genomic diversity. |
| first_indexed | 2024-09-23T10:40:08Z |
| format | Article |
| id | mit-1721.1/99217 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T10:40:08Z |
| publishDate | 2015 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | mit-1721.1/992172022-09-30T22:08:46Z Horizontal gene transfer and the evolution of bacterial and archaeal population structure Polz, Martin F. Alm, Eric J. Hanage, William P. Massachusetts Institute of Technology. Department of Biological Engineering Massachusetts Institute of Technology. Department of Civil and Environmental Engineering Polz, Martin F. Alm, Eric J. Many bacterial and archaeal lineages have a history of extensive and ongoing horizontal gene transfer and loss, as evidenced by the large differences in genome content even among otherwise closely related isolates. How ecologically cohesive populations might evolve and be maintained under such conditions of rapid gene turnover has remained controversial. Here we synthesize recent literature demonstrating the importance of habitat and niche in structuring horizontal gene transfer. This leads to a model of ecological speciation via gradual genetic isolation triggered by differential habitat-association of nascent populations. Further, we hypothesize that subpopulations can evolve through local gene-exchange networks by tapping into a gene pool that is adaptive towards local, continuously changing organismic interactions and is, to a large degree, responsible for the observed rapid gene turnover. Overall, these insights help to explain how bacteria and archaea form populations that display both ecological cohesion and high genomic diversity. Gordon and Betty Moore Foundation National Science Foundation (U.S.) (Grant DEB 0821391) National Institute of General Medical Sciences (U.S.) (Grant GM088558-01) 2015-10-13T12:22:28Z 2015-10-13T12:22:28Z 2013-01 Article http://purl.org/eprint/type/JournalArticle 01689525 http://hdl.handle.net/1721.1/99217 Polz, Martin F., Eric J. Alm, and William P. Hanage. “Horizontal Gene Transfer and the Evolution of Bacterial and Archaeal Population Structure.” Trends in Genetics 29, no. 3 (March 2013): 170–175. https://orcid.org/0000-0001-8294-9364 https://orcid.org/0000-0001-9296-3733 en_US http://dx.doi.org/10.1016/j.tig.2012.12.006 Trends in Genetics Creative Commons Attribution http://creativecommons.org/licenses/by-nc-nd/4.0/ application/pdf Elsevier PMC |
| spellingShingle | Polz, Martin F. Alm, Eric J. Hanage, William P. Horizontal gene transfer and the evolution of bacterial and archaeal population structure |
| title | Horizontal gene transfer and the evolution of bacterial and archaeal population structure |
| title_full | Horizontal gene transfer and the evolution of bacterial and archaeal population structure |
| title_fullStr | Horizontal gene transfer and the evolution of bacterial and archaeal population structure |
| title_full_unstemmed | Horizontal gene transfer and the evolution of bacterial and archaeal population structure |
| title_short | Horizontal gene transfer and the evolution of bacterial and archaeal population structure |
| title_sort | horizontal gene transfer and the evolution of bacterial and archaeal population structure |
| url | http://hdl.handle.net/1721.1/99217 https://orcid.org/0000-0001-8294-9364 https://orcid.org/0000-0001-9296-3733 |
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