MRPG: Phylogeny, Biogeography and Systematics of Erithalis and Ernodea (Rubiaceae) in the Caribbean

MRPG：加勒比地区的 Ethalis 和 Ernodea（茜草科）的系统发育、生物地理学和系统学

• 批准号: 9807089
• 负责人: Vivian Negron-Ortiz
• 金额: --
• 依托单位: Miami University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-09-15 至 2002-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9807089&HistoricalAwards=false
• 关键词: MRPG; Phylogeny; Biogeography; Systematics; Erithalis

Negron-Ortiz DEB-9807089 The biogeography of the West Indies can be described as intricate. The relationships of a complex geological history of the region, numerous islands with unique histories, and a rich biota ranging from pan-Caribbean species to single island endemics are not well understood. Vicariance and trans-oceanic dispersal are models proposed to explain the present-day distribution of the biota . In order to understand the origins of the Caribbean flora, studies of Caribbean taxa are needed. Until now most of the models tested have involved animals. The PI proposes to use molecular and morphological data to construct evolutionary trees of two plant genera (Erithalis and Ernodea: Rubiaceae) endemic to the Caribbean Basin. For each genus, relationships among species will be examined and these results will be integrated with distribution patterns to ascertain patterns of colonization events in the region. Multiple populations of all taxa of both genera will be examined using morphological data and two molecular markers. Many representative genera will be included as outgroups to determine the mainland geographical affinities of the two genera. Resulting evolutionary trees will be compared to geographic distributions of the species to test biogeographical hypotheses. Starting date: August 15, 1998.

内格伦-奥尔蒂斯DEB-9807089西印度群岛的地理可以说是错综复杂的。该地区复杂的地质历史、众多具有独特历史的岛屿以及从泛加勒比物种到单一岛屿特有物种的丰富生物群之间的关系尚不清楚。替代和跨洋扩散是用来解释生物群现今分布的模型。为了了解加勒比植物群的起源，需要对加勒比分类群进行研究。到目前为止，大多数测试的模型都涉及动物。PI建议使用分子和形态学数据构建加勒比海盆地特有的两个植物属（Erithalis和Ernodea：Rubiaceae）的进化树。对于每个属，物种之间的关系将进行检查，这些结果将与分布模式，以确定该地区的殖民化事件的模式。两个属的所有类群的多个群体将使用形态学数据和两个分子标记进行检查。许多有代表性的属将作为外群被包括在内，以确定两属的大陆地理亲缘关系。由此产生的进化树将比较物种的地理分布，以测试地理假设。起始日期：1998年8月15日。