Recombination shapes the natural population structure of the hyperthermophilic archaeon Sulfolobus islandicus.
Although microorganisms make up the preponderance of the biodiversity on Earth, the ecological and evolutionary factors that structure microbial populations are not well understood. We investigated the genetic structure of a thermoacidophilic crenarchaeal species, Sulfolobus islandicus, using multil...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.1082.2980 2023-05-15T16:59:09+02:00 Recombination shapes the natural population structure of the hyperthermophilic archaeon Sulfolobus islandicus. Rachel J Whitaker Dennis W Grogan John W Taylor The Pennsylvania State University CiteSeerX Archives 2005 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1082.2980 http://files.campus.edublogs.org/micropopbio.org/dist/c/1/files/2012/01/whitaker-recombination-sulfolobus-mbe2006-ppkbbs.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1082.2980 http://files.campus.edublogs.org/micropopbio.org/dist/c/1/files/2012/01/whitaker-recombination-sulfolobus-mbe2006-ppkbbs.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://files.campus.edublogs.org/micropopbio.org/dist/c/1/files/2012/01/whitaker-recombination-sulfolobus-mbe2006-ppkbbs.pdf text 2005 ftciteseerx 2020-05-03T00:26:40Z Although microorganisms make up the preponderance of the biodiversity on Earth, the ecological and evolutionary factors that structure microbial populations are not well understood. We investigated the genetic structure of a thermoacidophilic crenarchaeal species, Sulfolobus islandicus, using multilocus sequence analysis of six variable protein-coding loci on a set of 60 isolates from the Mutnovsky region of Kamchatka, Russia. We demonstrate significant incongruence among gene genealogies and a lack of association between alleles consistent with recombination rates greater than the rate of mutation.The observation of high relative rates of recombination suggests that the structure of this natural population does not fit the periodic selection model often used to describe populations of asexual microorganisms. We propose instead that frequent recombination among closely related individuals prevents periodic selection from purging diversity and provides a fundamental cohesive mechanism within this and perhaps other archaeal species. Text Kamchatka Unknown |
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ftciteseerx |
language |
English |
description |
Although microorganisms make up the preponderance of the biodiversity on Earth, the ecological and evolutionary factors that structure microbial populations are not well understood. We investigated the genetic structure of a thermoacidophilic crenarchaeal species, Sulfolobus islandicus, using multilocus sequence analysis of six variable protein-coding loci on a set of 60 isolates from the Mutnovsky region of Kamchatka, Russia. We demonstrate significant incongruence among gene genealogies and a lack of association between alleles consistent with recombination rates greater than the rate of mutation.The observation of high relative rates of recombination suggests that the structure of this natural population does not fit the periodic selection model often used to describe populations of asexual microorganisms. We propose instead that frequent recombination among closely related individuals prevents periodic selection from purging diversity and provides a fundamental cohesive mechanism within this and perhaps other archaeal species. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Rachel J Whitaker Dennis W Grogan John W Taylor |
spellingShingle |
Rachel J Whitaker Dennis W Grogan John W Taylor Recombination shapes the natural population structure of the hyperthermophilic archaeon Sulfolobus islandicus. |
author_facet |
Rachel J Whitaker Dennis W Grogan John W Taylor |
author_sort |
Rachel J Whitaker |
title |
Recombination shapes the natural population structure of the hyperthermophilic archaeon Sulfolobus islandicus. |
title_short |
Recombination shapes the natural population structure of the hyperthermophilic archaeon Sulfolobus islandicus. |
title_full |
Recombination shapes the natural population structure of the hyperthermophilic archaeon Sulfolobus islandicus. |
title_fullStr |
Recombination shapes the natural population structure of the hyperthermophilic archaeon Sulfolobus islandicus. |
title_full_unstemmed |
Recombination shapes the natural population structure of the hyperthermophilic archaeon Sulfolobus islandicus. |
title_sort |
recombination shapes the natural population structure of the hyperthermophilic archaeon sulfolobus islandicus. |
publishDate |
2005 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1082.2980 http://files.campus.edublogs.org/micropopbio.org/dist/c/1/files/2012/01/whitaker-recombination-sulfolobus-mbe2006-ppkbbs.pdf |
genre |
Kamchatka |
genre_facet |
Kamchatka |
op_source |
http://files.campus.edublogs.org/micropopbio.org/dist/c/1/files/2012/01/whitaker-recombination-sulfolobus-mbe2006-ppkbbs.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1082.2980 http://files.campus.edublogs.org/micropopbio.org/dist/c/1/files/2012/01/whitaker-recombination-sulfolobus-mbe2006-ppkbbs.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766051352723587072 |