Dissertation Research: A Systematic Study of Tribe Neillieae (Rosaceae)

论文研究：Neillieae（蔷薇科）族的系统研究

• 批准号: 0073041
• 负责人: Daniel Potter
• 金额: $ 1万
• 依托单位: University of California-Davis
• 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=0073041&HistoricalAwards=false
• 关键词: Dissertation; Research; Systematic; Study; Tribe

0073041Potter and OhMany plant groups distributed only in eastern Asia and temperate North America have long attracted the interest of botanists and have been the subject of numerous taxonomic, biogeographic, and evolutionary studies over the past two centuries. Despite this long history of interest and several recent phylogenetic studies of such plant groups, their biogeographic history has not yet been well established. Tribe Neillieae, comprising three taxonomically difficult genera, Neillia, Physocarpus, and Stephanandra, is distributed in eastern Asia and both eastern and western North America, usually in mountainous regions. Tribe Neillieae possesses ideal characteristics for studying historical biogeography of eastern Asia and temperate North America: the tribe is a strongly supported natural group, its distribution can be dissected into many areas in each continent, and its small number of species (ca. 25) facilitiates the analysis of a variety of data using a range of modern phylogenetic methods. However, no comprehensive systematic study of the group has yet been undertaken. Graduate student Sang-Hun Oh, under the direction of Dr. Daniel Potter at University of California, Davis, is studying phylogenetic relationships of the tribe Neillieae using morphological and molecular data. Four DNA regions, encompassing both nuclear and chloroplast genomes, for all species in tribe Neillieae will be analyzed along with morphological characters to estimate a maximally robust phylogenetic framework. Biogeographic history of the tribe Neillieae will be evaluated using this phylogenetic framework in conjunction with current distribution patterns and fossil records. A taxonomic revision with a sound classification system that reflects evolutionary relationships of the members of tribe Neillieae will also be provided. The historical biogeography of tribe Neillieae will provide important information relevant to understanding how and when the eastern Asian-North American disjunct distribution pattern developed. In addition, considering that plants of Neillieae are horticulturally useful, this study will provide valuable information for screening germplasm and developing new ornamental cultivars. Finally, by integrating several close relatives of the tribe Neillieae, data produced in this project will contribute to illuminating the evolutionary relationships within Rosaceae, an evolutionarily complex and economically important plant family.

0073041Potter 和 Oh 许多仅分布于东亚和北美洲温带的植物群长期以来一直吸引着植物学家的兴趣，并且在过去两个世纪中一直是众多分类学、生物地理学和进化研究的主题。 尽管人们对这些植物群的兴趣有着悠久的历史，并且最近进行了几项系统发育研究，但它们的生物地理学历史尚未得到很好的确定。 Neilliae 部落由 Neillia、Physocarpus 和 Stephanandra 三个分类学上困难的属组成，分布于亚洲东部和北美东部和西部，通常分布在山区。 Neilliae部落具有研究东亚和北美洲温带历史生物地理学的理想特征：该部落是一个得到强有力支持的自然类群，其分布可以划分为每个大陆的许多区域，并且其物种数量较少（约25个）有利于研究使用一系列现代系统发育方法分析各种数据。 然而，尚未对该群体进行全面系统的研究。 加州大学戴维斯分校的研究生 Sang-Hun Oh 在 Daniel Potter 博士的指导下，正在利用形态学和分子数据研究 Neilliaee 部落的系统发育关系。 Neilliaee 部落中所有物种的四个 DNA 区域（包括核基因组和叶绿体基因组）将与形态特征一起进行分析，以估计最稳健的系统发育框架。将使用该系统发育框架结合当前的分布模式和化石记录来评估 Neilliae 部落的生物地理历史。 还将提供具有健全分类系统的分类学修订，反映 Neilliae 部落成员的进化关系。 Neillieae部落的历史生物地理学将为了解东亚-北美分离分布模式如何以及何时发展提供重要信息。 此外，考虑到Neilliae植物具有园艺用途，本研究将为筛选种质和开发新的观赏品种提供有价值的信息。 最后，通过整合 Neilliae 部落的几个近亲，该项目产生的数据将有助于阐明蔷薇科（一个进化复杂且具有重要经济意义的植物家族）内部的进化关系。