title: Absence of short-period repetitive-sequence interspersion in the basidiomycete Schizophyllum commune.
abstract: Reassociation kinetics and electron microscopy were used to examine the organization of DNA sequences in the Basidiomycete Schizophyllum commune. Short-period interspersion of repetitive and unique sequences is absent from the DNA of this wood-rotting fungus. Instead, repetitive sequences are found predominantly in several, perhaps 16, clusters averaging 225 kilobases in length. The results of this study, the first concerning a fungus in the important fungal Class Basidiomycetidae, are discussed in relation to: sequence organization in three other species of true fungi, fungal evolution and the regulation of gene expression.
mesh_terms: D000363:Agaricales / Q000235:genetics*; D001483:Base Sequence; D004261:DNA Replication; D004251:DNA Transposable Elements; D004271:DNA, Fungal / Q000032:analysis*; D008854:Microscopy, Electron; D009690:Nucleic Acid Conformation; D009695:Nucleic Acid Renaturation; D012091:Repetitive Sequences, Nucleic Acid; D012567:Schizophyllum / Q000235:genetics*; D013045:Species Specificity
chemical_list: D004251:DNA Transposable Elements; D004271:DNA, Fungal