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Abstract Detail


Chen, Shichao [1], Zhang, Li [1], Tian, Qi [2], Fu, Cheng-xin [3], QIU, Ying-xiong [3], SOLTIS, PAMELA S. [4], Soltis, Douglas E. [4].

Studies on Platycarya (Juglandaceae) Highlight the Boundary between Floristic Sub-kingdoms in the East Asia Flora and Adaptive Genetic Variation.

The flora of eastern Asia is distinctively rich compared with other floristic regions in the northern hemisphere. However, knowledge of its evolution is limited. The genusĀ Platycarya (Juglandaceae) is endemic to Eastern Asia. It was once widespread and provides an excellent opportunity to investigate the role of Pleistocene climatic change on the distribution of Eastern Asian biodiversity. We employed AFLP and cpDNA and nuclear sequence data, and sampled plants over the present distribution, to reconstruct phylogenetic relationships among haplotype and their geographical distribution patterns –we sought to highlight its origin, speciation, migratory route and demographic history. The geographic pattern of cpDNA suggests a long-term fragmentation and multiple refugia survival during the Quaternary climatic oscillations; no recent expansions were suggested. Previous study revealed two divergent lineages in a line with the boundary between the Sino-Japanese Floristic Region and Sino-Himalayan Region. In Platycarya, we discuss the possible formation of two Eastern Asiatic Floristic Sub-Kingdoms. The new RAD-seq technique produced high-resolution genomic data sets and available environmental databases promise to increase our knowledge of adaptive genomic variation of Platycarya on the landscape.

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1 - Tongji University, College of Life Science and Technology, 1239 siping road, yangpu, Shanghai, Shanghai, 200092, China
2 - Chenshan, Botancal Garden, 201602
3 - Zhejiang University, College of Life Science, Hangzhou, 310058, China
4 - University of Florida, Florida Museum of Natural History, PO Box 117800, Gainesville, FL, 32611, USA

temperate deciduous forest
Glacial refugia
ancient migration

Presentation Type: Poster:Posters for Topics
Session: P
Location: Eyrie/Boise Centre
Date: Monday, July 28th, 2014
Time: 5:30 PM
Number: PBG015
Abstract ID:836
Candidate for Awards:None

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