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Evolutionary Ecology of Marine Yeasts as Determined by Molecular Relatedness

由分子相关性确定的海洋酵母的进化生态学

基本信息

批准号：
8717146
负责人：
Jack Fell
金额：
$ 4.95万
依托单位：
University of Miami
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
1988
资助国家：
美国
起止时间：
1988-01-01 至 1989-12-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=8717146&HistoricalAwards=false
关键词：
Evolutionary Ecology Marine Yeasts Determined

项目摘要

There is a considerable lack of knowledge of the role of marine microorganisms is biogeochemical cycling and other processes. This is due, in part, to inadequate information on the fundamental biology of these marine organisms. Recent advances in molecular biology have made tools available to answer a variety of basic questions. This research will examine the origin and phylogenetic relationships among marine yeasts. Preliminary investigations indicate that marine yeasts originated from terrestrial plant parasites, the heterobacidiomycetes, a group that includes such fungi as the rusts and smuts. Recent studies have shown that the heterobasidiomycetes are capable of producing free living yeasts stages that may be distributed by wing or land drainage. Our studies, based on phenotypic characteristics, suggests that many of the marine yeasts are evolved from, or are identical to, the yeasts stages of the plant parasites. However, molecular studies, based on nuclear DNA relatedness, have shown that comparisons based on phenotypic responses can be misleading because the genetic bases for many of thes criteria reside in only a few genes. We propose to determine the relationships between species of marine yeasts and the relationships of yeasts to terrestrial plant parasites through studies of molecular relatedness.

人们对妇女的作用认识不足，海洋微生物是地球化学循环和其他流程. 这部分是由于以下方面的信息不足：这些海洋生物的基本生物学。最近分子生物学的进步已经提供了工具来回答各种各样的基本问题。本研究将探讨海洋酵母的起源和系统发育关系。初步调查表明，海洋酵母起源于从陆生植物寄生虫，异杆菌，包括锈菌和黑穗病菌等真菌的一组。最近研究表明异担子菌能够生产自由生活酵母阶段，可以通过翼或地面排水。我们的研究，基于表型这些特征表明，许多海洋酵母是从植物的酵母阶段进化而来或与植物的酵母阶段相同寄生虫然而，基于细胞核DNA的分子研究相关性，表明基于表型的比较答案可能是误导性的，因为许多人的遗传基础这些标准只存在于少数几个基因中。我们建议确定海洋酵母物种之间的关系，酵母与陆生植物寄生虫的关系通过分子关联性的研究。