Molecular Systematics and Evolution of Simple-Septate Basidomycetes

小行星9318232 在估计的16，000种担子菌中，世界上常见的蘑菇和马勃菌和托架真菌是没有明显子实体但具有微观孢子结构的形式。 这些众多的真菌形式的分类关系很少研究，虽然许多经济上重要的作物病原体和生态上重要的腐生物群包括在这里。 同样，这些真菌的系统发育或系谱亲缘关系，在它们之间和与子囊菌真菌，知之甚少。 DNA测序的新的分子方法承诺大量的比较数据与目前的形态和超微结构的研究结果，最终分类和系统发育的综合集成。 明尼苏达大学的大卫·麦克劳克林博士和博士后助理埃里克·斯旺博士已经开始了一个重大项目，以获得异担子菌简单分隔群的众多代表的DNA序列数据，并将这些新的分子数据与传统的分类特征相结合。 真菌的分子系统发育分析有很大的希望，为提高分类识别的主要路线的进化和解决长期存在的争议有关的起源和形态多样性的腐菌和致病菌群的担子菌。

9318232 McLaughlin Among the estimated 16,000 species of basidiomycete fungi, the familiar mushrooms and puffballs and bracket fungi of the world, are forms without conspicuous fruiting bodies but possessing microscopic spore-bearing structures. The taxonomic relationships of these numerous fungal forms are little studied, although many economically important crop pathogens and ecologically significant saprobic groups are included here. As well, the phylogenetic or genealogical affinities of these fungi, among themselves and with the ascomycete fungi, are poorly known. New molecular methods of DNA sequencing promise large quantities of comparative data for integration with current morphological and ultrastructural findings for eventual taxonomic and phylogenetic synthesis. Dr. David McLaughlin at the University of Minnesota and postdoctoral associate Dr. Eric Swann have started a major project to acquire DNA sequence data for numerous representatives of the simple septate groups of Heterobasidiomycetes, and to integrate these new molecular data with traditional taxonomic characters. Molecular phylogenetic analyses of the fungi hold great promise for improving taxonomic recognition of the major lines of evolution and for resolving longstanding controversies about the origin and morphological diversification of saprobic and pathogenic groups of basidiomycetes.