Phylogeography study of Toxicodendron radicans ssp hispidum and orientale in East Asia

in International Symposium (Abstract oral presentation), 國際研討會(摘要口頭發表)
標題Phylogeography study of Toxicodendron radicans ssp hispidum and orientale in East Asia
AuthorsYu-Chung Chiang, 江友中
出版日期Jul 7 2007 12:0
會議地點Chicago Illinois

In order to investigate the genetic diversity, phylogeography, possible dispersing pathway and refugium within and among natural populations on the two subspecies of Toxicodendron radicans in Asia, was analyzed by using sequence data of organelle genome. T. radicans in Asia, known as the relative or complex of North American poison ivy is a perennial climbing deciduous woody shrub. Populations are distributed in the monsoon Asia, including Southwest China, Taiwan and Japan, where the geological history is largely affected by plate tectonics, island formation, and Pleistocene glaciations. Gillis (1975) reclassified Rhus ambigua to T. radicans and devided to two subspecies. One subspecies, T. radicans ssp. hispidum, is distributed in Southwest China,while another one, ssp. orientale, is distributed in Japan. Asian poison ivy is an ideal model for estimating population diversity, migration, speciation, vicarance and phylogeographical reconstruction. Using sequences of highly diverse regions in organelle DNA was used to investigate the phygeographical pattern, dispersing pathway and refugium of Asian poison ivy.

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