Chloroplast DNA phylogeography of Fagus crenata (Fagaceae) in Japan |
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| Authors: | N Fujii N Tomaru K Okuyama T Koike T Mikami K Ueda |
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| Institution: | (1) Makino Herbarium, Graduate School of Science, Tokyo Metropolitan University, Tokyo, Japan, JP;(2) Graduate School of Bioagricultural Sciences, Nagoya University, Japan, JP;(3) Hokkaido University Forests, Hokkaido, Japan, JP;(4) Faculty of Agriculture, Hokkaido University, Hokkaido, Japan, JP;(5) Department of Biology, Faculty of Science, Kanazawa University, Ishikawa, Japan, JP |
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| Abstract: | CpDNA variation in Japanese beech, Fagus crenata (Fagaceae), was studied in 45 populations distributed throughout the species' range. Two cpDNA regions were sequenced: the
non-coding region between the trnL (UAA) 5′exon and trnF (GAA), and the trnK region (including matK). Thirteen distinct cpDNA haplotypes were recognized and each haplotype was found to be geographically structured. Two major
clades (I and II+III) were revealed in phylogenetic analyses among the haplotypes using F. sylvatica as an outgroup. The haplotypes of Clade I were distributed mainly along the Japan Sea side of the Japanese Archipelago, while
those of Clade II+III occurred chiefly along the Pacific Ocean side. Consequently, the distribution of the two major cpDNA
clades suggests that there were two migration routes in the history of F. crenata; one along the Japan Sea and the other along the Pacific Ocean side of the Japanese Islands.
Received March 19, 2001 Accepted November 22, 2001 |
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| Keywords: | : cpDNA Fagus crenata genetic structuring intraspecific phylogeography Japanese beech refugia trnK trnL-trnF |
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