Populations of Antarctic hairgrass (Deschampsia antarctica) show low genetic diversity
Populations of the only two flowering plants native to the Antarctic have recently increased in number and size possibly due to climate warming. We have undertaken a preliminary study of the population genetics of one of these species by surveying variation in amplified fragment length polymorphisms...
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University of Colorado
2003
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ftnerc:oai:nora.nerc.ac.uk:17650 2023-05-15T13:45:12+02:00 Populations of Antarctic hairgrass (Deschampsia antarctica) show low genetic diversity Holderegger, Rolf Stehlik, Ivana Smith, Ronald I. Lewis Abbott, Richard J. 2003 http://nora.nerc.ac.uk/id/eprint/17650/ unknown University of Colorado Holderegger, Rolf; Stehlik, Ivana; Smith, Ronald I. Lewis; Abbott, Richard J. 2003 Populations of Antarctic hairgrass (Deschampsia antarctica) show low genetic diversity. Arctic, Antarctic and Alpine Research, 35 (2). 214-217. https://doi.org/10.1657/1523-0430(2003)035[0214:POAHDA]2.0.CO;2 <https://doi.org/10.1657/1523-0430(2003)035[0214:POAHDA]2.0.CO;2> Botany Publication - Article PeerReviewed 2003 ftnerc https://doi.org/10.1657/1523-0430(2003)035[0214:POAHDA]2.0.CO;2 2023-02-04T19:31:13Z Populations of the only two flowering plants native to the Antarctic have recently increased in number and size possibly due to climate warming. We have undertaken a preliminary study of the population genetics of one of these species by surveying variation in amplified fragment length polymorphisms (AFLP) within the Antarctic Hairgrass, Deschampsia antarctica. Populations of D. antarctica from two widely separated regions of the maritime Antarctic, namely Signy Island in the north and Léonie Islands 1350 km farther south, were characterized by low genetic diversity (only 15.95% of total genetic variation found within populations). Populations from the northern and southern maritime Antarctic were genetically distinct from each other (FCT = 37.10%), and low levels of historical gene flow occurred among them (Nm = 0.05). This genetic structure suggests that new populations of D. antarctica are founded by one or few individuals, which mainly reproduce by self-fertilization and/or vegetative propagation. Vegetative reproduction and selfing are, therefore, likely to have been key factors in the establishment of D. antarctica at new sites in the Antarctic during recent years. Article in Journal/Newspaper Antarc* Antarctic Antarctic and Alpine Research Antarctica Arctic Léonie Islands Signy Island Natural Environment Research Council: NERC Open Research Archive Antarctic The Antarctic Signy Island ENVELOPE(-45.595,-45.595,-60.708,-60.708) Léonie ENVELOPE(-68.350,-68.350,-67.600,-67.600) Léonie Islands ENVELOPE(-68.350,-68.350,-67.600,-67.600) |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
topic |
Botany |
spellingShingle |
Botany Holderegger, Rolf Stehlik, Ivana Smith, Ronald I. Lewis Abbott, Richard J. Populations of Antarctic hairgrass (Deschampsia antarctica) show low genetic diversity |
topic_facet |
Botany |
description |
Populations of the only two flowering plants native to the Antarctic have recently increased in number and size possibly due to climate warming. We have undertaken a preliminary study of the population genetics of one of these species by surveying variation in amplified fragment length polymorphisms (AFLP) within the Antarctic Hairgrass, Deschampsia antarctica. Populations of D. antarctica from two widely separated regions of the maritime Antarctic, namely Signy Island in the north and Léonie Islands 1350 km farther south, were characterized by low genetic diversity (only 15.95% of total genetic variation found within populations). Populations from the northern and southern maritime Antarctic were genetically distinct from each other (FCT = 37.10%), and low levels of historical gene flow occurred among them (Nm = 0.05). This genetic structure suggests that new populations of D. antarctica are founded by one or few individuals, which mainly reproduce by self-fertilization and/or vegetative propagation. Vegetative reproduction and selfing are, therefore, likely to have been key factors in the establishment of D. antarctica at new sites in the Antarctic during recent years. |
format |
Article in Journal/Newspaper |
author |
Holderegger, Rolf Stehlik, Ivana Smith, Ronald I. Lewis Abbott, Richard J. |
author_facet |
Holderegger, Rolf Stehlik, Ivana Smith, Ronald I. Lewis Abbott, Richard J. |
author_sort |
Holderegger, Rolf |
title |
Populations of Antarctic hairgrass (Deschampsia antarctica) show low genetic diversity |
title_short |
Populations of Antarctic hairgrass (Deschampsia antarctica) show low genetic diversity |
title_full |
Populations of Antarctic hairgrass (Deschampsia antarctica) show low genetic diversity |
title_fullStr |
Populations of Antarctic hairgrass (Deschampsia antarctica) show low genetic diversity |
title_full_unstemmed |
Populations of Antarctic hairgrass (Deschampsia antarctica) show low genetic diversity |
title_sort |
populations of antarctic hairgrass (deschampsia antarctica) show low genetic diversity |
publisher |
University of Colorado |
publishDate |
2003 |
url |
http://nora.nerc.ac.uk/id/eprint/17650/ |
long_lat |
ENVELOPE(-45.595,-45.595,-60.708,-60.708) ENVELOPE(-68.350,-68.350,-67.600,-67.600) ENVELOPE(-68.350,-68.350,-67.600,-67.600) |
geographic |
Antarctic The Antarctic Signy Island Léonie Léonie Islands |
geographic_facet |
Antarctic The Antarctic Signy Island Léonie Léonie Islands |
genre |
Antarc* Antarctic Antarctic and Alpine Research Antarctica Arctic Léonie Islands Signy Island |
genre_facet |
Antarc* Antarctic Antarctic and Alpine Research Antarctica Arctic Léonie Islands Signy Island |
op_relation |
Holderegger, Rolf; Stehlik, Ivana; Smith, Ronald I. Lewis; Abbott, Richard J. 2003 Populations of Antarctic hairgrass (Deschampsia antarctica) show low genetic diversity. Arctic, Antarctic and Alpine Research, 35 (2). 214-217. https://doi.org/10.1657/1523-0430(2003)035[0214:POAHDA]2.0.CO;2 <https://doi.org/10.1657/1523-0430(2003)035[0214:POAHDA]2.0.CO;2> |
op_doi |
https://doi.org/10.1657/1523-0430(2003)035[0214:POAHDA]2.0.CO;2 |
_version_ |
1766216439817043968 |