REVSYS: Relationships, Diversification, and Monographic study of the Poorly-known Loeselia Clade (Polemoniaceae)

REVSYS：鲜为人知的 Loeselia 分支（Polemoniaceae）的关系、多样化和专题研究

• 批准号: 1120080
• 负责人: James Porter
• 金额: $ 25.17万
• 依托单位: Rancho Santa Ana Botanic Garden
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-11-01 至 2017-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1120080&HistoricalAwards=false
• 关键词: REVSYS; Relationships; Diversification; Monographic; study

Loeselia is an obscure and little studied lineage in the flowering plant family Polemoniaceae (phlox family), which includes two genera: Loeselia L. and Dayia J.M. Porter. Despite the lack of detailed knowledge about the lineage, Loeselia has played a pivotal role in hypotheses concerning the origin of temperate members of Polemoniaceae from tropical ancestors. This research program will provide a better understanding of Loeselia (with 22 or more species). Preliminary studies of comparative DNA sequences provide evidence that Loeselia is composed of two groups of species based on ancestry, corresponding to Loeselia L. and Dayia J.M. Porter. Exhaustive taxon sampling within Loeselia and dense sampling of related groups will be used to develop an understanding of genealogical relationships (phylogeny) within and among species, using chloroplast and nuclear DNA sequences, morphological, and anatomical data.Evidence generated through this research will lead to a new classification system and the first comprehensive monographs of Loeselia, including keys, descriptions, illustrations, distribution maps, and on-line resources. The studies of character evolution, using the same data, will provide a model for analyses of variation in reproductive traits such as self-incompatibility and floral symmetry, which is thought to be an important generator of flowering plant diversity.

Loeselia是开花植物花葵科（福禄考科）中一个鲜为人知且研究较少的谱系，该科包括两个属：Loeselia L.和Dayia J.M.波特尽管对该谱系缺乏详细的了解，Loeselia在关于Polemoniaceae温带成员起源于热带祖先的假设中发挥了关键作用。这项研究计划将提供一个更好的了解Loeselia（与22个或更多的物种）。比较DNA序列的初步研究提供的证据表明，Loeselia是由两组物种的基础上的祖先，相应的Loeselia L。和Dayia J.M.波特在Loeselia内的详尽分类单元取样和相关组的密集取样将用于发展对系谱关系的理解（植物发生学）种内和种间，使用叶绿体和核DNA序列，形态学和解剖学数据。通过这项研究产生的证据将导致一个新的分类系统和第一部全面的Loeselia专著，包括检索表，描述，插图，分布图，在线资源。 性状进化的研究，使用相同的数据，将提供一个模型，如自交不亲和性和花的对称性，这被认为是显花植物多样性的重要发电机的生殖性状的变异分析。