RUI: Molecular Systematics of the Oomycota

这项研究将使用核和线粒体rDNA序列信息来评估来自当今Omycota不同祖先群体的生物的系统发育关系。这些分子对研究亲缘关系的效用将在不同的分类水平上进行评估。关于哪些类群相对于色藻(Cavalier-Smith 1986--包括金藻科、黄藻科、芽孢杆菌等)的祖先来说是单系的，将会得出推断。因此，应将其列入经修订的Omycota。基于分子数据的系统发育计划将用于测试基于其他现有非分子特征的系统发育计划。初步的分子分析和基于游动孢子超微结构特征的分析导致了共同类群之间相同的系统发育关系，这种方法可以提供对它们系统发育关系的最真实的了解。这些类群与其他原生生物谱系的关系将为研究和预测它们生物学的各个方面提供一个关键的框架，并将在为该类群和相关类群的进一步系统发育研究选择一套合适的特征时非常有用。

This study will use nuclear and mitochondrial rDNA sequence information to assess phylogenetic relatedness of organisms derived from the various ancestral groups of present day Oomycota. The utility of these molecules for studying relationships will be evaluated at different taxonomic levels. Inferences will be derived concerning which groups are monophyletic relative to ancestors of the Chromista (Cavalier- Smith 1986-includes Chrysophyceae, Xanthophyceae, Bacilliarophyceae etc.) and should, therefore, be included in a revised Oomycota. Phylogenetic schemes based on molecular data will be used to test those based on other existing non-molecular characters. Preliminary molecular analyses and those based on zoospore ultrastructural characters have resulted in the same phylogenetic relationships among the groups in common and this approach can provide the truest understanding of their phylogenetic relationships. The relationships of these groups to other protist lineages will provide a pivotal framework for examining and predicting every aspect of their biology and will be highly useful in selecting a suite of appropriate characters for further phylogenetic investigations in this and related groups.