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Ohmany植物群仅在东亚和温带北美分布，长期以来吸引了植物学家的兴趣，并且在过去两个世纪中一直是许多分类学，生物地理和进化研究的主题。 尽管感兴趣的悠久历史和对此类植物群体的一些系统发育研究，但其生物地理史尚未得到充分确立。 Neillia，Physocarpus和Stephanandra的三个分类学困难属的Neillieae分布在东亚以及东部和北美东部，通常在山区。 Neillieae部落具有研究东亚和温带北美的历史生物地理学的理想特征：该部落是一个强烈支持的自然群体，可以将其分布分布到每个大陆的许多领域，少量物种（Ca. 25）促进了使用现代生理学方法范围的各种数据分析。 但是，尚未对该小组进行全面的系统研究。 在加利福尼亚大学戴维斯分校的丹尼尔·波特（Daniel Potter）博士的指导下，研究生Sang-Hun Oh正在使用形态学和分子数据研究部落Neillieae的系统发育关系。 四个DNA区域涵盖了核成形物基因组，将分析Neillieae中的所有物种以及形态学特征，以估算一个最大鲁棒的系统发育框架。将使用此系统发育框架与当前的分布模式和化石记录一起评估部落Neillieae的生物地理历史。 还将提供反映Neillieae部落成员进化关系的声音分类系统的分类修订。 部落Neillieae的历史生物地理学将提供与了解东亚北美分离分布模式如何以及何时开发的重要信息。 此外，考虑到尼尔利亚植物在园艺上有用，这项研究将为筛查种质和开发新的观赏品种提供宝贵的信息。 最后，通过整合部落尼尔利（Neillieae）部落的几个近亲，该项目产生的数据将有助于阐明在进化上复杂且经济上重要的植物家族Rosaceae内的进化关系。