Analysis of Ultrastructural Characters in the Systematics ofOomycetes

卵菌是一种类似真菌的生物，在水生和潮湿的生境中很重要，在那里它们腐烂有机物，寄生藻类、真菌、植物、昆虫和甲壳类动物。尽管它们很重要，但目前用于显示这些生物的系统发育关系和分类的许多特征在不同的环境条件下并不稳定。这个项目将利用超微结构特征来建立一个新的稳定特征的基础，然后利用这个数据库来建立一个新的分类单元内部和内部的系统发育模型，并修改它们的分类。人物基础将集中在可移动的无性孢子上。一旦完成，PI将转向对阿凡诺斯属的分析。较大类群和属的系统发育分析将采用基于外类群转化序列极化的简约分析。

Oomycetes are fungal-like organisms that are important in aquatic and moist habitats where they decay organic matter and parasitize algae, fungi, plants, insects, and crustacea. Despite their importance, many characters currently used to show phylogenetic relationship and to classify these organisms are not stable under different environmental conditions. This project will use ultrastructural features to develop a new base of stable characters and then to use that data base to develop a new model of phylogeny, both of and within the taxon, and to revise their classification. The character base will focus on motile, asexual spores. Once completed the PI will turn to an analysis of the genus Aphanomyces. The phylogenetic analysis of the larger group and the genus will use parsimony analysis based on polarization of transformation series using out-groups.