Molecular Systematics of Ribosomal RNA Genes in the Tricholomataceae

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Dr. Rytas Vilgalys of Duke University will use modern methods of DNA analysis to obtain nucleotide sequence data and restriction-site mapping information on fungi of three related tribes of the basidiomycete family Tricholomataceae. The genomic data will be used to improve recognition of generic groups of these fungi and to determine the phylogenetic affinities among the genera and tribes. The fungi will be surveyed for phylogenetically useful restriction site and sequence variation at loci coding for ribosomal RNA. In addition, Dr. Vilgalys has adapted laboratory procedures for filamentous fungi which allow rapid, direct sequencing of RNA from isolates from crude cellular lysates. Further genetic analyses will provide information about the rate and direction of evolution within ribosomal genes of fungi.