FIG. 2.

Morphology of the ΔpkaR mutant compared with the WT and the complemented strains. A. The forward side of the colonies is shown after growth on AMM at 30°C for 5 days. B. The reverse side of the same colonies, illustrating the highly pigmented reverse side of the ΔpkaR mutant. C. Microscopic morphology of the conidial heads of the isolates grown under the same conditions for 48 h, showing the poorly developed conidial heads in the mutant. D. The early hyphae of the ΔpkaR mutant are wider, thicker, and darker than those of the WT. C and D were photographed with differential interference contrast at magnification ×40.