Phylogenetic Analysis of the "Long-lived Gilia" Clade (Polemoniaceae)

小行星9509121 昆虫等动物传粉者在有花植物形态多样性的起源中所起的重要作用受到普遍的重视。 然而，我们仍然对从一种授粉综合征（例如，鸟类、蝙蝠、蜜蜂或蛾）到另一种授粉综合征的进化变化相关的事件的实际顺序知之甚少。 通过分析一组具有著名授粉综合征的植物的物种形成事件的历史，系谱序列，我们应该能够详细重建新的授粉机制的进化路径。 分子系统学专家J·马克·波特博士和植物形态学和分类学专家迪特尔·威尔肯博士正在共同努力确定福禄考科（Polemoniaceae）物种的遗传学。 大约120种将被研究，作为家庭的花和传粉者的多样性的代表，DNA和形态特征。 将对核核糖体序列和叶绿体基因进行DNA分析。 分子和形态学分析所揭示的物种分化的一致模式构成了系统发育关系的强有力的假设。 这一系谱框架反过来提供了一个路线图的顺序变化的花的形状，大小和物候与传粉者的生态转变，通过这些植物的进化过程。

9509121 Porter The important role that animal pollinators like insects play in the origin of morphological diversity in flowering plants is generally appreciated. However, we still know little about the actual sequence of events associated with evolutionary change from one pollination syndrome (for example, by bird, bat, bee, or moth) to another. Through analysis of the historical, genealogical sequence of speciation events in a group of plants with well-known pollination syndromes, we should be able to reconstruct in detail the evolutionary path to new pollination mechanisms. Dr. J. Mark Porter, a specialist in molecular systematics, and Dr. Dieter Wilken, a specialist in plant morphology and taxonomy, are working together to determine the phylogeny of the species of the phlox family, Polemoniaceae. About 120 species will be studied, as representative of the floral and pollinator diversity in the family, for both DNA and morphological characteristics. DNA analyses will be conducted on nuclear ribosomal sequences and on chloroplast genes. Congruent patterns of species divergence that are revealed by both molecular and morphological analysis constitute robust hypotheses of phylogenetic relationship. This genealogical framework in turn provides a road map to the sequence of changes in floral shape, size, and phenology associated with the ecological shifts in pollinators through the course of evolution in these plants.