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Population structure of Cladonia borealis in King George Island

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Population structure of Cladonia borealis in King George Island
Other Titles
킹조지섬의 Cladonia borealis의 군집 구조
Park, Chae Haeng
Jeong, Gajin
Hong, Soon Gyu
Antarcitc lichen; Cladonia borealis; population structure
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Park, Chae Haeng, Jeong, Gajin, Hong, Soon Gyu. 2010. Population structure of Cladonia borealis in King George Island. 한국미생물학회연합. 한국미생물학회연합. 2010.10.14~.
The fruticose lichen Cladonia borealis grows on soil and humus, sometimes among mosses in light and dry places and is found in polar and subpolar areas. In order to investigate genetic variation and geographical distribution of C. borealis, 50 specimens mainly from King George Islands (Antarctic) and from Svalbard (Arctic) and Punta Arenas (Chile) as references were analyzed. Sequences of rDNA (ITS1–
5.8S-ITS2-26S), mitochondrial small subunit (mtSSU) and RNA polymerase II (RPB2) were obtained, and phylogenetic relationship and haplotype network were analyzed. Cladonia borealis from King George Island was divided into two lineages. Cladonia borealis from Svalbard was divided into three lineages. In total 7 ITS1–
5.8S-ITS2-26S haplotypes, 2 mtSSU haplotypes, and 4 RPB2 haplotypes were found. According to the phylogenetic relationships and haplotype networks, it is regarded that Cladonia borealis was transferred at least three times between northern and southern hemispheres.
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