Collaborative Research: Phylogenetic Analysis Dalechampia (Euphorbiaceae) using DNA and Morphological Data

合作研究：利用 DNA 和形态数据对 Dalechampia（大戟科）进行系统发育分析

• 批准号: 9318490
• 负责人: Bruce Baldwin
• 金额: $ 10.44万
• 依托单位: Duke University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-03-01 至 1997-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9318490&HistoricalAwards=false
• 关键词: Collaborative; Research; Phylogenetic; Analysis; Dalechampia

9318490 Baldwin Understanding the taxonomic relationships, evolution, and biogeographic history of organisms depends upon accurate phylogenetic information, that is, knowledge of the genealogy of the group. Dr. Bruce Baldwin of Duke University in collaboration with Dr. Scott Armbruster of the University of Alaska is reconstructing the phylogeny of Old and New World species of the pantropical plant genus Dalechampia (Euphorbiaceae family) in order to gain insights into the evolution of the group's pollination system and its biogeographic history. Specific objectives include: 1. to collect liquid-preserved and herbarium specimens for morphological analysis and for DNA sequencing of chloroplast and nuclear ribosomal genes; 2. to determine the pollination ecology of a sample of Old World taxa, thus complementing knowledge of New World species; 3. to reconstruct the phylogenetic pattern of species divergences using nuclear and chloroplast DNA data and morphology; and 4. to use the phylogeny to trace the biogeographic history of the group and to generate testable hypotheses about change in pollination ecology and floral form. The application of phylogenetic information to evolutionary biology and ecology has generated considerable excitement in recent times. Important features of studying evolution with an estimated phylogeny include the ability to infer long-term evolutionary history of characteristics not preserved in the fossil record, such as ecological relationships between plants and animals, and to distinguish adaptive evolution from the effects of phylogenetic constraint and past stochastic events. The Armbruster and Baldwin project will advance that agenda.

9318490鲍德温了解生物体的分类关系，进化和生物地理历史取决于准确的系统发育信息，即对群体的家谱的了解。 杜克大学的布鲁斯·鲍德温（Bruce Baldwin）博士与阿拉斯加大学的Scott Armbruster博士合作，重建了泛热带植物Dalechampia（Euphorbiaceae家族）的新旧和新世界物种的系统发育，以便深入了解该集团的污染系统及其生物地理学历史。 具体目标包括：1。收集液体保存和草药标本，用于形态学分析以及叶绿体和核核糖体基因的DNA测序； 2。确定旧世界类群样本样本的授粉生态，从而补充新世界物种的知识； 3。使用核和叶绿体DNA数据和形态重建物种差异的系统发育模式； 4。使用系统发育来追踪该组的生物地理历史，并产生有关授粉生态和花卉形式变化的可检验的假设。 近年来，系统发育信息在进化生物学和生态学中的应用引起了极大的兴奋。 使用估计的系统发育研究进化的重要特征包括推断化石记录中未保留的特征的长期进化史，例如植物与动物之间的生态关系，并区分适应性进化与系统发生约束和过去随机事件的影响。 Armbruster和Baldwin项目将提高该议程。