Der Haustorienkomplex von Erysiphe betae (Vanha) Weltzien

The haustorial complex of Erysiphe betae (Vanha) Weltzien The haustorial complex of Erysiphe betae resembles the type of haustorium of other powdery mildew species on dicotyledonous plants. A collar of polysaccharide material with an invaginated electrondense channel surrounds the septed infection peg. The nearly elliptic haustorial body with appendices at both poles is surrounded by the plasmalemma, which had been transferred to the extrahaustorial membrane. Dictyosomes and endoplasmatic reticulum are presumably be involved in this process. Haustorial body and appendices contain many mitochondria, and with progressing senescence, the number of vacuoles with partly membrane‐like inclusions increases.