DISSERTATION RESEARCH: Evolution of a novel floral organ in Dipsacaceae: consequences for dispersal and diversification

论文研究：续断科一种新型花器官的进化：对传播和多样化的影响

• 批准号: 0710269
• 负责人: Michael Donoghue
• 金额: $ 1.2万
• 依托单位: Yale University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-07-01 至 2008-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0710269&HistoricalAwards=false
• 关键词: DISSERTATION; RESEARCH; Evolution; novel; floral

Evolution of a novel floral organ in Dipsacaceae: Consequences for dispersal and diversificationThis project is designed to elucidate the origin and consequences of morphological novelty using the flowering plant group Dipsacaceae (Dipsacales) as a study system. Dipsacaceae are characterized by an "epicalyx," a novel organ that subtends the flower and functions in fruit dispersal. Much of the diversity in Dipsacaceae relates directly to the epicalyx and different morphologies are associated with different dispersal mechanisms. These observations suggest that the epicalyx functioned as a "key innovation" that spurred the adaptive radiation of the Dipsacaceae around the Mediterranean basin. A detailed molecular phylogenetic study of the Dipsacaceae will be conducted to critically test this "key innovation" hypothesis, while also taking into account the possible influence of biogeography on the evolution of morphological characters and the rate of diversification. This study will provide key phylogenetic information for a morphologically unusual and understudied group within the Dipsacales. This will yield an excellent sampling of Dipsacales as a whole and provide a valuable model for exploring a wide range of macroevolutionary issues. This project will expand collaborative ties with Italian colleagues and provide the Co-PI with training in a wide variety of rapdily developing analytical techniques that will allow her to work across traditional disciplines

新型花器中的发展次曲科：分散和多样化的后果旨在使用开花植物群Dipsacaceae（Dipsacales）作为研究系统来阐明形态新颖性的起源和后果。 Dipsacaceae的特征是“ epicalyx”，这是一种新型器官，该器官在果实分散中构成了花朵和功能。 Dipsacaceae的许多多样性直接与Epicalyx有关，不同的形态与不同的分散机制有关。这些观察结果表明，epicalyx起着“关键创新”的作用，刺激了地中海盆地周围二甲股科的适应性辐射。 将对次紫杉的详细分子系统发育研究进行批判性检验此“关键创新”假设，同时还考虑了生物地理学对形态特征进化的可能影响和多样化的速度。这项研究将为次生甲虫中的形态不寻常和研究的群体提供关键的系统发育信息。这将为整个Dipsacales提供出色的取样，并为探索各种宏观进化问题提供了宝贵的模型。 该项目将扩大与意大利同事的合作关系，并为Co-Pi提供各种各样开发的分析技术的培训，这将使她能够跨传统学科工作