Abstract
This paper describes the development of S-SAP (sequence-specific amplified polymorphism) using a primer derived from the LTR (long terminal repeat) of the Pyggy retrotransposon isolated from Pyrenophora graminea. Fragments were amplified by S-SAP from different Pyrenophora spp., indicating the presence of Pyggy-like sequences in these genomes. The bands were highly polymorphic between isolates and the number of bands differed by as much as 10-fold between species, demonstrating the potential of this method for genetic analysis in fungi. The phylogenetic relationship among the isolates as deduced using S-SAP data is presented, and shows evidence of genetic exchange between P. graminea and P. teres.
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