Identifying and Distinguishing Seedling and Root Rot Diseases of Sugar Beets

Fig. 5. Encysted zoospores of A. cochlioides collecting around tips of sporangia. Secondary zoospores are released (left), leaving empty cysts. These zoospores subsequently serve as new inoculum and infect sugar beet roots.



Image from Plant Health Progress article:
Identifying and Distinguishing Seedling and Root Rot Diseases of Sugar Beets