PRF/J: Chloroplast and Nuclear Sequence Phylogenetics of the Palmae

尽管对形态学、解剖学和 分子数据集，棕榈科内的系统发育关系 而单子叶植物内部的家庭地位仍然没有得到解决， 在具有深的系统发育分支的分类群中常见的情况。 这些问题的解决方案包括生成附加数据 集，更大的分类群采样密度，全面审查 化石记录和对各种数据集的批判性分析 单独地和组合地。 为此，DNA区域 表现出适合于系统发育的分化水平 在家庭、亚家庭和部门层面的解决办法将 被寻找。 来自核和叶绿体基因组的序列 将为家庭的代表成员制作， 提出的外群分类群。 将进行数据分析 独立地，但也与不同的数据集相结合。 系统发育重建将使用简约分析，并采用 共识和组合方法。 特定进化 需要解决的问题包括系统发育位置的解析 无论是在家庭和关于单子叶植物，研究 在系统发育框架内的特征进化，比较 基因组内和基因组间的分子进化，以及对 家族中广泛的地理模式。 %%% 因为有大量的化石记录， 一般特征良好，仅限于热带/亚热带， 而且传播能力低，棕榈树提供了一个很好的 负责开展上述工作的小组。 本研究将 解决涉及数据分析的争议性问题， 分类学 问题是“什么是最合适的方法， 分析.“困难涉及：（a）一个国家的相对重要性 （B）基因相对于 基因组与生物体的遗传学。 分析性辩论 战略围绕共识或组合的方法。的 该字段的动态性质表明， 需要潜在解决方案的应用。

Despite intensive study of morphological, anatomical and molecular data sets, phylogenetic relationships within the Palmae and the family position within the monocots remain unresolved, a situation common in taxa with deep phylogenetic branches. Solutions to such problems include generation of additional data sets, greater taxon sampling density, comprehensive review of the fossil record,and critical analysis of the various data sets individually and in combination. For this purpose, regions of DNA exhibiting levels of divergence appropriate for phylogenetic resolution at the familial, subfamilial and sectional levels will be sought. Sequences from both nuclear and chloroplast genomes will be produced for representative members of the family and proposed outgroup taxa. Analysis of data is to be conducted independently but also coupled with different data sets. Phylogenetic reconstruction will use parsimony analysis, and employ consensus and combinational approaches. Specific evolutionary issues to be addressed include resolution of phylogenetic position both within the family and with respect to the monocots, study of character evolution within a phylogenetic framework, comparative molecular evolution within and across genomes, and examination of broad biogeographic patterns exhibited by the family. %%% Because an extensive fossil record exists, and the family is generally well characterized, restricted to the tropics/subtropics, and has low dispersal abilities, the palms provide an excellent group for conducting the work described above. This study will address controversial problems involving data analysis in systematics. The issue is "What is the most appropriate method of analysis." Difficulties relate to: (a) relative importance of one data set compared to another and (b) questions of gene versus genome versus organismal phylogenies. Debate over analytical strategies revolves around methods of consensus or combination. The dynamic nature of this field indicating that additional comparisons and applications of potential solutions are needed.