Paralogous genes: Families of paralogous genes were only found in Z. tritici (eight families) and Z. ardabiliae (seven families) and included 23 and 14 genes, respectively. In Z. ardabiliae, 57% of these duplicated sequences are SSP-encoding genes, whereas there were no SSP paralogs in Z. tritici. In Z. ardabiliae, only one family could be associated with a gene function (kinase), whereas in Z. tritici several families contained sequences with known protein domains of transposable elements.