Analysis of Ultrastructural Characters in the Systematics ofOomycetes

卵菌系统学超微结构特征分析

• 批准号: 9107451
• 负责人: Martha Powell
• 金额: --
• 依托单位: Miami University
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-09-01 至 1995-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9107451&HistoricalAwards=false
• 关键词: Analysis; Ultrastructural; Characters; Systematics; ofOomycetes

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.

卵菌是类真菌生物，在水生和潮湿的栖息地中很重要，它们会腐烂有机物并寄生藻类、真菌、植物、昆虫和甲壳类动物。尽管它们很重要，但目前用于显示系统发育关系和对这些生物体进行分类的许多特征在不同的环境条件下并不稳定。该项目将利用超微结构特征来开发新的稳定性状基础，然后使用该数据库来开发分类群内部和分类群内的新系统发育模型，并修改其分类。角色基础将集中于能动的无性孢子。一旦完成，PI 将转向对丝丝酵母属进行分析。大类群和属的系统发育分析将使用基于使用外类群的转化系列极化的简约分析。