Phylogenetic Relationships of Pezizales and Allied Ascomycetes

佛罗里达大学的詹姆斯·金布罗博士将继续他对Pezizales和Tuberales目真菌的电子显微镜研究，以提高对组成这些目的属和科的认识，并开始确定这些腐生和菌根生物之间的进化谱系。块菌目包括众所周知的可食用松露，其物种通过附着在宿主树根上的菌根进化出地下生存方式。金布罗博士对这些真菌的孢子排出器官的发育和微化学特征的精细分析，正在提供数据，显示这些地下生物与更知名的地上杯状真菌之间的系统发育联系。他的工作将检验关于从更多的Pezizales的上位(地上)分类群进化出伪劣的(地下)块菌分类群的理论，特别是这种特殊的地下生活模式的几个平行出现在子囊菌真菌中进化的可能性。

Dr. James Kimbrough of the University of Florida will continue his electron-microscopic studies of fungi of the orders Pezizales and Tuberales in order to improve recognition of the genera and families constituting these orders and to begin determining the evolutionary lineages among these saprobic and mycorrhizal organisms. Tuberales includes the well-known edible truffles, species of which have evolved a subterranean existence through a mycorrhizal attachment to the roots of host trees. Dr. Kimbrough's fine-scale analysis of developmental and microchemical features of the spore-discharge apparatus of these fungi is providing data showing the phylogenetic linkage of these subterranean organisms to better-known aboveground cup-fungi. His work will test theories about the evolution of hypogeous (belowground) truffle taxa from the more numerous epigeous (aboveground) taxa of Pezizales, particularly the likelihood that several parallel occurrences of this peculiar subterranean mode of life have evolved among ascomycete fungi.