Genetic diversity and population structure of Buddleja crispa Bentham in the Himalaya-Hengduan Mountains region revealed by AFLP |
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| Affiliation: | 1. Morsani College of Medicine, Department of Pathology and Cell Biology, University of South Florida, Tampa, FL 33612, United States;2. Department of Cancer Biology and Evolution, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, United States;3. Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada;4. Department of Cell Biology, Microbiology and Molecular Biology, University of South Florida, Tampa, FL 33620, United States;5. Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL 33612, United States;6. USF Health Byrd Alzheimer''s Research Institute, University of South Florida, Tampa, FL 33612, United States;7. Laboratory of Structural Dynamics, Stability and Folding of Proteins, Institute of Cytology, Russian Academy of Sciences, St. Petersburg, Russian Federation |
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| Abstract: | Buddleja crispa Benth. is one of the most morphologically variable species in genus Buddleja, and it is widely distributed in the Himalaya-Hengduan Mountains (HHM) region. This study used AFLPs as a tool to examine the genetic variation among and within 25 populations of B. crispa. Analysis of population genetics of the species aimed to clarify morphological variation, current distribution patterns, strong adaptability to habitats, and the effects of geological factors in the HHM region. The genetic structure results, based on PCoA and NJ cluster analyses, revealed that the populations of B. crispa were divided into two genetic groups. Furthermore, the peripheral populations had lower genetic diversity than the populations in the center of the distribution areas (Three Parallel Rivers). We conclude that the gene flow (predominantly seed and pollen flow) and the population differentiation of B. crispa might be more affected by the barriers formed by rivers and mountains than by geographic distance. |
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| Keywords: | AFLP Genetic diversity Population structure |
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