Liu , HsiaoLei , Chung, Kuo-Fang .
The Origin of Hawaiian Paper Mulberry - phylogeography of Pacific Broussonetia papyrifera.
Barkcloth (tapa) is one of the most important material cultures of Austrinesian peoples. In the Pacific, tapa is made primarily of paper mulberry (Broussonetia papyrifera). Earlierstudies suggested that paper mulberries could have been brought to the Oceania from East Asia along with the expansion of the Austronesian peoples. Studying the phylogeographic pattern of paper mulberry thus potentially can provide insights into the pre-history Austronesian colonization into the Pacific. In this poster, we present preliminary analyses of the genetic variation of paper mulberries collected from Taiwan and southern China, Southeast Asia (Indonesia and Vietnam), and the Hawaii, aiming to unveil the geographic origins of the Hawaiian populations. Analyses of DNA sequences of both ITS and cpDNA ndhF-rpL32 indicate that populations in Vietnam, Indonesia, and Hawaii are devoid of genetic variation, while Taiwan harbors the highest genetic diversity, followed by China. Haplotype networks reconstructed using both DNA markers all show star-like network structure. In the networks, all haplotypes from Hawaii are linked directly with haplotypes from China, Taiwan and Indonesia, suggesting the Hawaiian haplotypes are likely derived from those regions. This inference is further supported by nested cladeanalyses (NCA) that conclude a continuous range expansion or by long distance colonization for the Hawaiian samples. These inferences are consistent with the idea that paper mulberry in Hawaii have been transported from mainland Southeast Asia to Hawaii, conforming to the "Express Train Hypothesis" that postulated Taiwan as the homeland for the Austronesian peoples.
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1 - National Taiwan University, School of Forestry and Resource Conservation, No. 1, Sec. 4, Roosevelt Road, Taipei, Taiwan
2 - National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei, N/A, 10617, Taiwan
Presentation Type: Poster:Posters for Topics
Location: Battelle South/Convention Center
Date: Monday, July 9th, 2012
Time: 5:30 PM