EAPSI: Molecular Phylogeny and Biogeography of Series Chinensis (Iridaceae)

系统发育方法是理解进化关系的基本工具，可以为地理范围的起源和变化提供可能的解释。该奖项支持研究亚洲蝴蝶花的地理起源和进化关系。该项目将专注于中国系列虹膜，这是一种主要分布在中国东北部的小虹膜，但也可以在韩国和日本找到。该系列中的物种数量尚不清楚，因为作者尚未就是否包括一些物种达成一致。我们对这些和其他中国种的分布的了解是有限的，因为最近在亚洲的系统工作集中在中国的植物群项目上，该项目调查了主要中国草本植物的现有数据库，以产生对现有分类群的全面描述。本研究将通过田野调查和对新的和现有的分布资料进行分析，对中国菊科的生物地理学进行调查。这项研究将与中国科学院北京植物研究所的王小泉教授合作进行。该项目将利用系统发育学方法研究：1)哪些亚洲种应被归入中国科；2)中国科物种之间的系统发育关系；3)中国科的起源、分布和多样性。分子标记将被用来测试系统发育关系，这些结果将被用来测试关于地理分布的假设。将使用最大似然法和贝叶斯统计方法对核和叶绿体DNA标记进行测序，以进行系统发育重建。由此产生的系统发展将被用作检验关于地理多样化模式的假说的框架。东亚和太平洋夏季学院计划下的这个奖项支持一名美国研究生的夏季研究，并

Phylogenetic methods are essential tools that allow for an understanding of evolutionary relationships and can provide a possible explanation for origins and changes in geographic ranges. This award support research to investigate geographic origins and evolutionary relationships of Asian Iris. The project will focus on series Chinensis, small irises that are distributed mainly in northeast China, but also found in Korea and Japan. The number of species in the series is unknown because authors have not agreed on the inclusion of some species. Our understanding of the distribution of these and other Chinese species is limited because recent systematic work in Asia has focused on the Flora of China project, which surveyed existing databases from major Chinese herbaria to produce an overall account of taxa present. This research will investigate the biogeography of series Chinensis through fieldwork, and analyses of new and existing distributional data. This research will be conducted in collaboration with Professor Xiao-Quan Wang at the Chinese Academy of Science Institute of Botany in Beijing, China.Using phylogenetic approach, the project will investigate: 1) which Asian species should be included in series Chinensis; 2) phylogenetic relationships among series Chinensis species; and 3) the origin, dispersal and diversification of the series in China. Molecular markers will be applied to test phylogenetic relationships and these results will be used to test hypotheses about geographic distribution. Nuclear and chloroplast DNA makers will be sequenced for phylogeny reconstruction using maximum likelihood and Bayesian statistical methods. The resulting phylogeny will be used as a framework for testing hypothesis on patterns of geographic diversification.This award under the East Asia and Pacific Summer Institutes program supports summer research by a U.S. graduate student and is