Genetic diversity in the moss Pohlia nutans on geothermal ground of Mount Rittmann, Victoria Land, Antarctica
The only known population of the moss Pohlia nutans in continental Antarctica occurs on geothermally heated ground of volcanic Mt. Rittmann in northern Victoria Land. Colonisation by this bryophyte is due to peculiar environmental characteristics of the geothermal ground, because mosses do not norma...
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| Veröffentlicht in: | Polar biology 2002-10, Vol.25 (10), p.771-777 |
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| creator | SKOTNICKI, M. L BARGAGLI, R NINHAM, J. A |
| description | The only known population of the moss Pohlia nutans in continental Antarctica occurs on geothermally heated ground of volcanic Mt. Rittmann in northern Victoria Land. Colonisation by this bryophyte is due to peculiar environmental characteristics of the geothermal ground, because mosses do not normally grow in Antarctica at such elevations. Specimens from several moss patches within two sites of 80 m^sup 2^ total area were analysed genetically to determine whether they all originated from a single colonisation event, whether the population is genetically diverse, and whether the temperature range of geothermal ground (17-35°C under moss colonies) affects rates of mutation. Both the RAPD technique and DNA sequencing of the conserved nuclear ribosomal RNA 18S-26S ITS region were used to compare this extremely isolated population with specimens of P. nutans from elsewhere in Antarctica. Like the moss Campylopus pyriformis on volcanic Mt. Melbourne, the Pohlia population exhibits low levels of genetic diversity and appears to be derived from a single immigration event followed by vegetative growth, mutation and dispersal.[PUBLICATION ABSTRACT] |
| doi_str_mv | 10.1007/s00300-002-0418-3 |
| format | Article |
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Both the RAPD technique and DNA sequencing of the conserved nuclear ribosomal RNA 18S-26S ITS region were used to compare this extremely isolated population with specimens of P. nutans from elsewhere in Antarctica. Like the moss Campylopus pyriformis on volcanic Mt. Melbourne, the Pohlia population exhibits low levels of genetic diversity and appears to be derived from a single immigration event followed by vegetative growth, mutation and dispersal.[PUBLICATION ABSTRACT]</description><identifier>ISSN: 0722-4060</identifier><identifier>EISSN: 1432-2056</identifier><identifier>DOI: 10.1007/s00300-002-0418-3</identifier><identifier>CODEN: POBIDP</identifier><language>eng</language><publisher>Heidelberg: Springer</publisher><subject>Aquatic plants ; Biological and medical sciences ; Campylopus ; Colonization ; Fundamental and applied biological sciences. Psychology ; Genetic diversity ; Genetics of eukaryotes. 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L</creatorcontrib><creatorcontrib>BARGAGLI, R</creatorcontrib><creatorcontrib>NINHAM, J. A</creatorcontrib><title>Genetic diversity in the moss Pohlia nutans on geothermal ground of Mount Rittmann, Victoria Land, Antarctica</title><title>Polar biology</title><description>The only known population of the moss Pohlia nutans in continental Antarctica occurs on geothermally heated ground of volcanic Mt. Rittmann in northern Victoria Land. Colonisation by this bryophyte is due to peculiar environmental characteristics of the geothermal ground, because mosses do not normally grow in Antarctica at such elevations. Specimens from several moss patches within two sites of 80 m^sup 2^ total area were analysed genetically to determine whether they all originated from a single colonisation event, whether the population is genetically diverse, and whether the temperature range of geothermal ground (17-35°C under moss colonies) affects rates of mutation. Both the RAPD technique and DNA sequencing of the conserved nuclear ribosomal RNA 18S-26S ITS region were used to compare this extremely isolated population with specimens of P. nutans from elsewhere in Antarctica. Like the moss Campylopus pyriformis on volcanic Mt. Melbourne, the Pohlia population exhibits low levels of genetic diversity and appears to be derived from a single immigration event followed by vegetative growth, mutation and dispersal.[PUBLICATION ABSTRACT]</description><subject>Aquatic plants</subject><subject>Biological and medical sciences</subject><subject>Campylopus</subject><subject>Colonization</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Genetic diversity</subject><subject>Genetics of eukaryotes. Biological and molecular evolution</subject><subject>Mosses</subject><subject>Mutation</subject><subject>Pohlia</subject><subject>Pohlia nutans</subject><subject>Population genetics, reproduction patterns</subject><subject>Terrestrial ecosystems</subject><subject>Thallophyta, bryophyta</subject><subject>Vegetals</subject><issn>0722-4060</issn><issn>1432-2056</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2002</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNp9kU2LFDEQhoMoOI7-AG8BUTxsa-Wjk_RxWdZVGFFEvTbV6WQ3S3eyJmlh_70ZZkHw4KmqqOetouol5CWDdwxAvy8AAqAD4B1IZjrxiOyYFLzj0KvHZAea806CgqfkWSm3AEwrOezIeuWiq8HSOfx2uYR6T0Ok9cbRNZVCv6abJSCNW8VYaIr02qXWzCsu9DqnLc40efq5JZV-C7WuGOMZ_RlsTbnpDhjnM3oeK2bbluBz8sTjUtyLh7gnPz5cfr_42B2-XH26OD90Vqi-dr3yXHDG5skJoyfdO9_PGlwPcuKql2gn5Q0zZuASPccjg9qrVkx6GFDsyZvT3Lucfm2u1HENxbplwejSVkbOODeamwa-_S_IQHAzSCaGhr76B71NW47tjCMFg9KyPXxP2Imyuf0vOz_e5bBivm_QeHRqPDk1NqfGo1OjaJrXD5OxWFx8xmhD-StsywejpPgDUq2Skg</recordid><startdate>20021001</startdate><enddate>20021001</enddate><creator>SKOTNICKI, M. 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| ispartof | Polar biology, 2002-10, Vol.25 (10), p.771-777 |
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| language | eng |
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| source | Springer Nature - Complete Springer Journals |
| subjects | Aquatic plants Biological and medical sciences Campylopus Colonization Fundamental and applied biological sciences. Psychology Genetic diversity Genetics of eukaryotes. Biological and molecular evolution Mosses Mutation Pohlia Pohlia nutans Population genetics, reproduction patterns Terrestrial ecosystems Thallophyta, bryophyta Vegetals |
| title | Genetic diversity in the moss Pohlia nutans on geothermal ground of Mount Rittmann, Victoria Land, Antarctica |
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