Genetic structure of East Antarctic populations of the moss Ceratodon purpureus
Abstract The capacity of the polar flora to adapt is of increasing concern given current and predicted environmental change in these regions. Previous genetic studies of Antarctic mosses have been of limited value due to a lack of variation in the markers or non-specificity of the methods used. We e...
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Online Access: | http://dx.doi.org/10.1017/s0954102008001466 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102008001466 |
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crcambridgeupr:10.1017/s0954102008001466 2024-03-03T08:37:57+00:00 Genetic structure of East Antarctic populations of the moss Ceratodon purpureus Clarke, Laurence J. Ayre, David J. Robinson, Sharon A. 2008 http://dx.doi.org/10.1017/s0954102008001466 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102008001466 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 21, issue 1, page 51-58 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2008 crcambridgeupr https://doi.org/10.1017/s0954102008001466 2024-02-08T08:32:00Z Abstract The capacity of the polar flora to adapt is of increasing concern given current and predicted environmental change in these regions. Previous genetic studies of Antarctic mosses have been of limited value due to a lack of variation in the markers or non-specificity of the methods used. We examined the power of five microsatellite loci developed for the cosmopolitan moss Ceratodon purpureus to detect genetically distinct clones and infer the distribution of clones within and among populations from the Windmill Islands, East Antarctica. Our microsatellite data suggest that the extraordinarily high levels of variation reported in RAPD studies were artificially elevated by the presence of contaminants. We found surprisingly little contribution of asexual reproduction to the genetic structure of the Windmill Islands populations, but more loci are required to determine the distribution of individual clones within and among populations. It is apparent that Antarctic populations of C. purpureus possess less genetic diversity than temperate populations, and thus have less capacity for adaptive change in response to environmental variation, but more markers are needed to resolve the total genetic diversity in Antarctic C. purpureus and other mosses. Article in Journal/Newspaper Antarc* Antarctic Antarctic Science Antarctica East Antarctica Windmill Islands Cambridge University Press Antarctic East Antarctica Windmill Islands ENVELOPE(110.417,110.417,-66.350,-66.350) Antarctic Science 21 1 51 58 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Geology Ecology, Evolution, Behavior and Systematics Oceanography Clarke, Laurence J. Ayre, David J. Robinson, Sharon A. Genetic structure of East Antarctic populations of the moss Ceratodon purpureus |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract The capacity of the polar flora to adapt is of increasing concern given current and predicted environmental change in these regions. Previous genetic studies of Antarctic mosses have been of limited value due to a lack of variation in the markers or non-specificity of the methods used. We examined the power of five microsatellite loci developed for the cosmopolitan moss Ceratodon purpureus to detect genetically distinct clones and infer the distribution of clones within and among populations from the Windmill Islands, East Antarctica. Our microsatellite data suggest that the extraordinarily high levels of variation reported in RAPD studies were artificially elevated by the presence of contaminants. We found surprisingly little contribution of asexual reproduction to the genetic structure of the Windmill Islands populations, but more loci are required to determine the distribution of individual clones within and among populations. It is apparent that Antarctic populations of C. purpureus possess less genetic diversity than temperate populations, and thus have less capacity for adaptive change in response to environmental variation, but more markers are needed to resolve the total genetic diversity in Antarctic C. purpureus and other mosses. |
format |
Article in Journal/Newspaper |
author |
Clarke, Laurence J. Ayre, David J. Robinson, Sharon A. |
author_facet |
Clarke, Laurence J. Ayre, David J. Robinson, Sharon A. |
author_sort |
Clarke, Laurence J. |
title |
Genetic structure of East Antarctic populations of the moss Ceratodon purpureus |
title_short |
Genetic structure of East Antarctic populations of the moss Ceratodon purpureus |
title_full |
Genetic structure of East Antarctic populations of the moss Ceratodon purpureus |
title_fullStr |
Genetic structure of East Antarctic populations of the moss Ceratodon purpureus |
title_full_unstemmed |
Genetic structure of East Antarctic populations of the moss Ceratodon purpureus |
title_sort |
genetic structure of east antarctic populations of the moss ceratodon purpureus |
publisher |
Cambridge University Press (CUP) |
publishDate |
2008 |
url |
http://dx.doi.org/10.1017/s0954102008001466 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102008001466 |
long_lat |
ENVELOPE(110.417,110.417,-66.350,-66.350) |
geographic |
Antarctic East Antarctica Windmill Islands |
geographic_facet |
Antarctic East Antarctica Windmill Islands |
genre |
Antarc* Antarctic Antarctic Science Antarctica East Antarctica Windmill Islands |
genre_facet |
Antarc* Antarctic Antarctic Science Antarctica East Antarctica Windmill Islands |
op_source |
Antarctic Science volume 21, issue 1, page 51-58 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102008001466 |
container_title |
Antarctic Science |
container_volume |
21 |
container_issue |
1 |
container_start_page |
51 |
op_container_end_page |
58 |
_version_ |
1792503062528524288 |