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Somatic mutation and the Antarctic ozone hole

Journal Article


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Abstract


  • 1.

    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.

    2.

    Our study used microsatellite markers to compare the genetic variation present within continental

    Antarctic, sub-Antarctic and temperate populations of the moss

    Ceratodon purpureus

    .

    3.

    In contrast to the RAPD studies, microsatellite data revealed that

    C. purpureus

    populations from

    continental Antarctica display less intra-population genetic diversity than populations from a

    range of temperate and sub-Antarctic sites.

    4.

    Analysis of molecular variation (

    amova

    ) revealed that populations within the Windmill Islands

    region of Antarctica were more genetically differentiated than populations spread among more

    widely separated temperate regions.

    5.

    Synthesis

    . 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.

Publication Date


  • 2008

Citation


  • Clarke, L., Ayre, D. J. & Robinson, S. A. (2008). Somatic mutation and the Antarctic ozone hole. Journal of Ecology, 96 378-385.

Scopus Eid


  • 2-s2.0-38849196286

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1082&context=scipapers

Ro Metadata Url


  • http://ro.uow.edu.au/scipapers/75

Has Global Citation Frequency


Number Of Pages


  • 7

Start Page


  • 378

End Page


  • 385

Volume


  • 96

Abstract


  • 1.

    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.

    2.

    Our study used microsatellite markers to compare the genetic variation present within continental

    Antarctic, sub-Antarctic and temperate populations of the moss

    Ceratodon purpureus

    .

    3.

    In contrast to the RAPD studies, microsatellite data revealed that

    C. purpureus

    populations from

    continental Antarctica display less intra-population genetic diversity than populations from a

    range of temperate and sub-Antarctic sites.

    4.

    Analysis of molecular variation (

    amova

    ) revealed that populations within the Windmill Islands

    region of Antarctica were more genetically differentiated than populations spread among more

    widely separated temperate regions.

    5.

    Synthesis

    . 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.

Publication Date


  • 2008

Citation


  • Clarke, L., Ayre, D. J. & Robinson, S. A. (2008). Somatic mutation and the Antarctic ozone hole. Journal of Ecology, 96 378-385.

Scopus Eid


  • 2-s2.0-38849196286

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1082&context=scipapers

Ro Metadata Url


  • http://ro.uow.edu.au/scipapers/75

Has Global Citation Frequency


Number Of Pages


  • 7

Start Page


  • 378

End Page


  • 385

Volume


  • 96