Fig. 3: Morphology and Root Colonization of Alternaria alternata in Culture and Plant Tissues.

a Top view of the DSE culture (Alternaria alternata) used in this experiment on Potato Dextrose Agar. Scale bar represents 10 mm. b DSE hyphae outside of and going into roots of a receiver plant in the Permeable treatment, stained with acid fuchsin (pink). c Internal DSE colonization of a sorghum root, cleared with KOH and stained with Trypan Blue. In b and c, arrows point to DSE hyphae and scale bars represent 100 µm.