Comparison of the genomic architecture of the MAT locus and surrounding genes among Botryosphaeria dothidea, B. kuwatsukai, Macrophomina. phaseolina and Diplodia sapinea. All four characterized MAT genes group together at a single locus, suggesting a homothallic mating-type system in both B. dothidea and B. kuwatsukai. Arrows represent gene order and orientation, but genes and intergenic regions are not to scale. Abbreviations: CIA30, complex I intermediate-associated protein 30; Cox, cytochrome C oxidase subunit Via; DUF2404, putative integral membrane protein containing DUF2404 domain; APN2, DNA lyase; APC5, anaphase-promoting complex.