US-Brazil Dissertation Research - Phylogenetic History and Species Delimitation in the Neotropical Plant Genus Pagamea Aubl. (Rubiaceae)

美国-巴西论文研究 - 新热带植物 Pagamea Aubl 属的系统发育历史和物种界定。

• 批准号: 0331538
• 负责人: Peter Stevens
• 金额: $ 2.01万
• 依托单位: University of Missouri-Saint Louis
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-01-01 至 2006-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0331538&HistoricalAwards=false
• 关键词: US; Brazil; Dissertation; Research; Phylogenetic

In this dissertation enhancement award supported by the Americas Program in the Office of International Science and Engineering and the Systematic Biology Program in the Division of Environmental Biology, Peter F. Stevens, Elizabeth A. Kellogg, and Alberto Vicentini of the University of Missouri, St. Louis and the Missouri Botanical Garden will use modern molecular-phylogenetic techniques and morphometrics to produce testable hypotheses of the mechanisms that have contributed to the diversification of Pagamea in South America. Since Pagamea is a fairly large and difficult Neotropical genus with a wide range in the Amazon basin, fieldwork will be conducted in Brazil, Venezuela, Peru, and Guyana. Precise location data for plants will be combined with assembly of information regarding the geographical pattern of climate, soils, and barriers to dispersal. Phylogenetic relationships will be reconstructed at a fine level of resolution. The results of this work can provide a model for studying and understanding the systematics and evolution of this complex and unusual genus of Rubiaceae. The foreign counterpart researcher is Rogerio Gribel at Instituto Nacional de Pesquisas da Amazonia (INPA) in Manaus, Brazil.This study should contribute to a broader understanding of biogeographical patterns in other South American angiosperm groups with a similar distribution. A modern classification of Pagamea is imperative for establishing conservation priorities for rare or endangered members in South American countries. During this project a student who is a member of an underrepresented group will gain international experience, and contacts between three U.S. and Brazilian institutions will be strengthened.

在这篇由国际科学与工程办公室美洲项目和环境生物学系系统生物学项目支持的论文中，Peter F.作者：Elizabeth A.密苏里州植物园的密苏里州大学的凯洛格和阿尔贝托·维森蒂尼将利用现代分子系统发育技术和形态测量学，对促进南美帕加梅多样化的机制提出可检验的假设。 由于Pagamea是一个相当大的和困难的新热带属，在亚马逊河流域的范围很广，野外工作将在巴西，委内瑞拉，秘鲁和圭亚那进行。 植物的精确位置数据将与有关气候、土壤和扩散障碍的地理模式的信息组合相结合。 系统发育关系将在精细的分辨率水平上重建。 本研究结果可为进一步研究和理解该属的系统学和进化提供参考。 国外同行研究员是巴西马瑙斯亚马逊国家研究所（INPA）的Rogerio Gribel。这项研究应该有助于更广泛地了解其他具有类似分布的南美洲被子植物群体的地理模式。 Pagamea的现代分类对于建立南美洲国家稀有或濒危成员的保护优先权至关重要。 在这个项目中，一个代表性不足的群体的学生将获得国际经验，三个美国和巴西机构之间的联系将得到加强。