Genetic diversity of Stemona parviflora: A threatened myrmecochorous medicinal plant in China |
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| Institution: | 1. Yunnan Forestry Technological College, Kunming, 650224, China;2. Kunming Botanical Garden, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650204, Yunnan, China;3. Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, China;4. Department of Horticulture and Landscape Architecture, 358 Ag Hall, Oklahoma State University, Stillwater, OK 74078, USA;1. Key Laboratory of Economic Plants and Biotechnology, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650201, China;2. National and Local Joint Engineering Research Center on Gemplasm Utilization and Innovation of Chinese Medicinal Materials in Southwest China, Yunnan Agricultural University, Kunming, 650201 Yunnan, China;1. Key Laboratory of Economic Plants and Biotechnology, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan, 650201, China;2. University of Chinese Academy of Sciences, Beijing, 100049, China;3. National and Local Joint Engineering Research Center on Germplasm Utilization and Innovation of Chinese Medicinal Materials in Southwest China, Yunnan Agricultural University, Kunming, 650201, Yunnan, China;1. Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China;2. Kunming Botanical Garden, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China;3. Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China;1. Royal Botanic Gardens, Kew, Wellcome Trust Millennium Building, Wakehurst Place, Ardingly, West Sussex, RH17 6TN, UK;2. The Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, Yunnan, PR China;3. Kunming Botanical Garden, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, Yunnan, PR China;1. Kunming Botanical Garden, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201 Yunnan, China;2. University of Chinese Academy of Sciences, 100049 Beijing, China |
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| Abstract: | The plant species Stemona parviflora, which is endemically distributed in Hainan and Guangdong Provinces of China, is an important constituent of Chinese traditional medicine “Baibu”. Based on AFLP analysis, at the species level, the percentage of polymorphic bands (PPB), gene diversity H, and Shannon's information index I of S. parviflora are 100%, 0.2826, and 0.4458, respectively. The genetic differentiation among populations is low (Gst = 0.0799), while the gene flow among these populations is high (Nm = 5.754). Actually, no distinguishable genetic structure is inferred according to the AFLP analysis in this study. There was no significant positive correlation between genetic distance and geographic distance either. Based on its medicinal use, seed dispersal pattern (myrmecochory), mating system, fragmentation of the natural habitat by rubber and eucalyptus planting, and the historical formation and transition of Hainan island and Guangdong provinces, we discuss the current threatened condition of the traditional medicinal plant S. parviflora. In/ex situ conservation tactics are recommended to save this important species. |
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| Keywords: | AFLP Baibu Conservation biology Myrmecochory Pollination Seed dispersal |
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