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

基本信息

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

项目摘要

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＆Hallthis项目从两个不同的角度探讨了植物科中花卉形态的演变：（1）谱系或系统发育关系以及（2）发育生物学。利用DNA序列和形态的差异，将分析该家族内部的家谱关系及其近距离的相对胸骨科（芥末族）。该分析将为对两个非洲属的更详细的研究提供框架，其中包括对花芽的深入现场工作和发展研究。发育模式将导致提出可能导致花卉形式变化较小的基因的明确假设，从而使模型有机体拟南芥（Brassicacaceae）收集的知识的丰富丰富。还将进行授粉现场研究，以评估授粉媒介在花卉形式变化中可能具有的角色。在我们了解植物的系统发育关系和花的发育遗传学方面，取得了巨大的进步。通常，这些领域彼此独立发展。系统发育是探索花卉形式演变的强大工具，同时，发展研究为模型生物的花卉形式变化提供了遗传模型。这些领域的组合允许探索基本遗传机制的形态变异进化。