The nucieotide sequences of the 5S rRNAs of four mushrooms and their use in studying the pnytogenetk position of bastdiomycetes among the eukaryotes

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Abstract
The nucieotide sequences of the 5 S ribosomal RNAs of the mushrooms Russula cyanoxantha, Pleurotue oetreatue, Agaricua edulis, and Auricularia auriaula-judae were determined. The sequences fit 1n a universal five-helix secondary structure model for 5 S RNA. As 1n most other 5 S RNAs, some helical areas contain non-standard base pairs. A clustering method was used to reconstruct an evolutionary tree from 82 eukaryotic 5 S RNA sequences. It allows to make a choice between alternative systematic classifications for basidiomycetes and reveals that the fungal kingdom 1s highly polyphyletic