Dissertation Research: Systematics of Dombeya and the Dombeyoideae (Malvaceae s.l.)

论文研究：冬贝亚属和冬贝亚科 (Malvaceae s.l.) 的系统学

• 批准号: 0709969
• 负责人: Melissa Luckow
• 金额: --
• 依托单位: Cornell Univ - State: AWDS MADE PRIOR MAY 2010
• 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: 2007-06-01 至 2009-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0709969&HistoricalAwards=false
• 关键词: Dissertation; Research; Systematics; Dombeya; Dombeyoideae

The plant genus Dombeya, of the Chocolate Family, is a striking example of the megadiversity of Madagascar, with 180 of its 210 species found only on this unique island. Although the genus is ubiquitous throughout Madagascar, most species of Dombeya are poorly understood and have been taxonomically neglected. This project aims to ameliorate this neglect by accomplishing two objectives: 1) complete a molecular phylogeny, a hypothesis of evolutionary relationships based on the study of DNA, for the entire genus, and 2) produce a taxonomic revision of section Astrapaea, a well-defined group within Dombeya.In developing countries, like Madagascar, widespread poverty compels unsustainable land use making immediate conservation action imperative. Yet, successful conservation and biodiversity management efforts require a sound taxonomic foundation, which is often lacking for tropical taxa. This study of section Astrapaea begins taxonomic work on Dombeya and the genus-wide phylogeny creates a framework for future taxonomic revision of the remainder of this dauntingly large genus, a significant goal considering Dombeya makes up 2% of the Malagasy flora. The project's concurrent creation of an online database of the Dombeya of Madagascar ensures dissemination of results to those most in need of them: researchers working on the ground in Madagascar.

巧克力科的植物属Dombeya是马达加斯加巨大多样性的一个引人注目的例子，其210种植物中有180种仅在这个独特的岛屿上发现。尽管该属在马达加斯加到处都是，但人们对Dombeya的大多数物种知之甚少，并且在分类学上被忽视了。该项目旨在通过实现两个目标来改善这种忽视：1)完成整个属的分子系统发育，基于DNA研究的进化关系假设，以及2)对Astrapaea部分进行分类修订，Astrapaea是Dombeya中定义明确的类群。在马达加斯加这样的发展中国家，普遍的贫困迫使土地使用不可持续，因此必须立即采取保护行动。然而，成功的保护和生物多样性管理工作需要一个良好的分类学基础，而热带分类群往往缺乏这一基础。Astrapaea部分的研究开始了对Dombeya的分类工作，全属范围的系统发育为未来对这一令人生畏的大属的剩余分类修订创造了一个框架，考虑到Dombeya占马达加斯加植物区系的2%，这是一个重要的目标。该项目同时建立了一个马达加斯加Dombeya的在线数据库，确保将结果传播给最需要的人：在马达加斯加实地工作的研究人员。