Interest in identification and characterization of fungi is increasing because of the expanding impact of fungi on biotechnological, industrial and medical systems. Fungal taxonomy, traditionally based on comparative morphology, has at times led to confusion when apparently insignificant and continuously variable morphological criteria are used to describe new taxa and to reclassify existing ta...

A portion of the Intergenic Spacer (IGS) of the ribosomal RNA operon of 74 isolates of 11 Ar? millaria species from Europe and North America was amplified using the polymerase chain reaction. Amplifications were made from scrapes of living mycelium without DNA extraction. Alu I digests ofthe amplified product were electrophoresed in agarose and stained with ethidium bromide. With few exceptions...

Phylogenetic and genetic relationships among 10 North American Armillaria species were analysed using sequence data from ribosomal DNA (rDNA), including intergenic spacer (IGS-1), internal transcribed spacers with associated 5.8S (ITS + 5.8S), and nuclear large subunit rDNA (nLSU), and amplified fragment length polymorphism (AFLP) markers. Based on rDNA sequence data, the nLSU region is less va...