FIGURE 6.

Colony morphology of the CpDmt1- and CpDmt2-null mutant strains. (A) Colony morphology of the mutant strains with comparison to the wild-type EP155/2 and CHV1-infected hypovirulent UEP1 strains. The CpDmt1-null mutant showed sporadic appearance of sectorization at the colony margin after 10 days of culture, while the CpDmt2-null mutant showed a near absence of aerial mycelia around the margins of colony. (B) Colony morphology of the progenies of the CpDmt1-null mutant. Numbers indicate colonies of the corresponding regions after 7 days of successive culture. The sectored phenotype was maintained in successive cultures and the non-sectored area showed the characteristic parental-mutant phenotype.