Dissertation Research: Floral Evolution and Systematics of the Plant Family Capparaceae

论文研究：辣椒科植物的花进化与系统学

• 批准号: 0073204
• 负责人: Kenneth Sytsma
• 金额: $ 1万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-06-01 至 2002-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0073204&HistoricalAwards=false
• 关键词: Dissertation; Research; Floral; Evolution; Systematics

0073204Sytsma & HallThis project explores evolution of floral morphology in the plant family Capparaceae from two different perspectives: (1) genealogy or phylogenetic relationships and (2) developmental biology. Using differences in DNA sequences and morphology, genealogical relationships within this family and its close relative Brassicaceae (mustard family) will be analyzed. This analysis will provide the framework for more detailed studies of two African genera, entailing intensive field work and developmental studies of floral buds. Patterns of development will lead to formulation of explicit hypotheses of possible genes that may be responsible for smaller scale changes in floral form, utlizing the wealth of knowledge gleaned from the model organism, Arabidopsis (Brassicaceae). Pollination field studies will also be conducted to evaluate roles that pollinators may have in changes in floral form. There have been great advances made in our knowledge of phylogenetic relationships of plants and on developmental genetics of flowers. In general, these fields have evolved independently of one another. Phylogenies are powerful tools for exploring evolution of floral form and, at the same time, developmental studies provide a genetic model for changes in floral forms of model organisms. Combination of these fields permits exploration of underlying genetic mechanisms for evolution of morphological variation.

0073204Sytsma & Hall 该项目从两个不同的角度探讨植物科植物花形态的演变：(1) 谱系学或系统发育关系，(2) 发育生物学。 利用 DNA 序列和形态的差异，分析该科及其近缘十字花科（芥菜科）内的谱系关系。 该分析将为两个非洲属的更详细研究提供框架，需要进行深入的实地工作和花芽的发育研究。 利用从模式生物拟南芥（十字花科）中收集到的丰富知识，发育模式将导致对可能的基因提出明确的假设，这些基因可能导致花形的小规模变化。 还将进行授粉现场研究，以评估传粉媒介在花形变化中可能发挥的作用。我们对植物系统发育关系和花卉发育遗传学的认识取得了巨大进步。 总的来说，这些领域是相互独立发展的。 系统发育是探索花形态进化的有力工具，同时发育研究为模式生物花形态的变化提供了遗传模型。 这些领域的结合允许探索形态变异进化的潜在遗传机制。