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https://hdl.handle.net/2440/65494
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Type: | Journal article |
Title: | Somatic mutation and the Antarctic ozone hole |
Author: | Clarke, L. Ayre, D. Robinson, S. |
Citation: | Journal of Ecology, 2008; 96(2):378-385 |
Publisher: | Blackwell Publishing Ltd |
Issue Date: | 2008 |
ISSN: | 0022-0477 1365-2745 |
Statement of Responsibility: | Laurence J. Clarke, David J. Ayre and Sharon A. Robinson |
Abstract: | <jats:title>Summary</jats:title><jats:p> <jats:list list-type="explicit-label"> <jats:list-item><jats:p>Previous studies of Antarctic clonal moss populations using RAPD markers have reported extraordinarily high levels of genetic variation. This has been claimed to reflect somatic mutation, possibly resulting from elevated UV‐B radiation.</jats:p></jats:list-item> <jats:list-item><jats:p>Our study used microsatellite markers to compare the genetic variation present within continental Antarctic, sub‐Antarctic and temperate populations of the moss <jats:italic>Ceratodon purpureus</jats:italic>.</jats:p></jats:list-item> <jats:list-item><jats:p>In contrast to the RAPD studies, microsatellite data revealed that <jats:italic>C. purpureus </jats:italic>populations from continental Antarctica display less intra‐population genetic diversity than populations from a range of temperate and sub‐Antarctic sites.</jats:p></jats:list-item> <jats:list-item><jats:p>Analysis of molecular variation (<jats:sc>amova</jats:sc>) revealed that populations within the Windmill Islands region of Antarctica were more genetically differentiated than populations spread among more widely separated temperate regions.</jats:p></jats:list-item> <jats:list-item><jats:p> <jats:italic>Synthesis</jats:italic>. Our data provide no evidence of elevated mutation rates in the Antarctic, and imply climate change will present ongoing challenges for continental Antarctic moss populations that appear weakly interconnected and with less potential than temperate populations to adapt to environmental change.</jats:p></jats:list-item> </jats:list> </jats:p> |
Keywords: | Antarctica Ceratodon purpureus climate change clonal genetic variation microsatellites ozone depletion RAPDs somatic mutation Windmill Islands |
Rights: | © 2008 The Authors. Journal compilation © 2008 British Ecological Society |
DOI: | 10.1111/j.1365-2745.2007.01347.x |
Published version: | http://dx.doi.org/10.1111/j.1365-2745.2007.01347.x |
Appears in Collections: | Aurora harvest 5 Earth and Environmental Sciences publications Environment Institute publications |
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