Phylogeny and Evolution of Ranunculales: An Integrative Approach

毛茛目的系统发育和进化：综合方法

• 批准号: 0542679
• 负责人: Sara Hoot
• 金额: --
• 依托单位: University of Wisconsin-Milwaukee
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-06-01 至 2010-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0542679&HistoricalAwards=false
• 关键词: Phylogeny; Evolution; Ranunculales; Integrative; Approach

The order of plants, Ranunculales, is a highly diverse group of flowering plants found throughout the world. It includes such important families as the poppies (Papaveraceae), barberries (Berberidaceae), and buttercups (Ranunculaceae), many of which have diverse horticultural and medicinal uses. Understanding evolutionary relationships in the Ranunculales is especially important as they are at the base of a large and important group of flowering plants called the eudicots. This proposal requests funding for the construction of a morphological data set for a relatively extensive sampling of Ranunculales, with a special emphasis on those traits most likely to be preserved in the fossil record (to allow for the integration of fossil data). Concomitantly, the DNA sequencing necessary to ensure complete molecular data sets for matching species will be done, providing a reliable framework for the morphological work. This combination and comparison of morphological and molecular data will be used to explore questions related to the integration of fossil data, how morphological characters evolved, and molecular dating with fossil calibrations. The integration of fossil data into evolutionary trees will be helpful in determining more accurate estimations of the dating of lineages and the biogeographical implications of those estimates. The proposed work will result in new morphological (especially micromorphological pollen, trichomes, stomatal patterns) and molecular data and will provide well resolved and supported evolutionary trees that will be useful in numerous biological fields (e.g., palaeobotany, ecology, ethnobotany, biogeography). The molecular data will be deposited in GenBank and the resulting evolutionary trees in TreeBase, thus making them available throughout the world via the web. Various techniques for integrating fossil data will be explored and compared. A reliable and fully searchable morphological database will be constructed and will be accessible via the web to both professionals and the public. The database will include images, evolutionary trees, data matrices, descriptions, a glossary, and references. A postdoctoral researcher will be trained in both morphological and molecular phylogenetic work (a rare combination at this time). Over the time of this project, several undergraduates will be employed, gaining invaluable lab experience as well as a deeper understanding of how scientists work.

毛滴目植物是一类高度多样化的开花植物，在世界各地都有发现。它包括罂粟科(罂粟科)、藤本植物(小檗科)和金凤花(毛茅科)等重要的科，其中许多具有不同的园艺和药用用途。了解毛滴目植物的进化关系尤其重要，因为它们是一大群重要的开花植物的基础，称为真花植物。该提案要求提供资金，为相对广泛的毛滴目动物样本建立形态数据集，特别强调那些最有可能被保存在化石记录中的特征(以便整合化石数据)。与此同时，将进行必要的DNA测序，以确保匹配物种的完整分子数据集，为形态工作提供可靠的框架。这种形态和分子数据的结合和比较将被用来探索与化石数据的整合、形态特征如何演变以及分子测年与化石校准有关的问题。将化石数据整合到进化树中，将有助于确定对谱系测年的更准确估计以及这些估计的生物地理影响。拟议的工作将产生新的形态(特别是微形态花粉、毛状体、气孔模式)和分子数据，并将提供在许多生物学领域(如古植物学、生态学、民族植物学、生物地理学)中有用的、得到很好解决和支持的进化树。分子数据将存储在GenBank中，生成的进化树将存储在TreeBASE中，从而使它们通过网络在世界各地可用。将探索和比较整合化石数据的各种技术。将建立一个可靠和完全可搜索的形态数据库，专业人员和公众都可以通过网络访问该数据库。该数据库将包括图像、进化树、数据矩阵、描述、词汇表和参考资料。一名博士后研究员将接受形态和分子系统学研究方面的培训(目前这是一种罕见的组合)。在这个项目的一段时间内，将雇用几名本科生，获得宝贵的实验室经验以及对科学家工作方式的更深理解。