Figure 8 | Scientific Reports

Figure 8

From: Deciphering the biology of Cryptophyllachora eurasiatica gen. et sp. nov., an often cryptic pathogen of an allergenic weed, Ambrosia artemisiifolia

Figure 8

Late stages of the infection of common ragweed leaf tissues with Cryptophyllachora eurasiatica: sections of chlorotic, yellow leaf segments surrounding perithecia of the pathogen. (a) Thick-walled hyphae (H) of C. eurasiatica in cells of the epidermis (Ep) and mesophyll parenchyma. (b) Thick-walled hyphae (H) of C. eurasiatica in cells of the palisade parenchyma. Note the accumulation of greyish storage materials, lipid droplets in the hyphae. (c) Thick-walled hyphae (H) of C. eurasiatica in mesophyll cells. Note septa (S) in the hyphae, the accumulation of greyish storage materials in the fungal cells, and the layered structure of the thickened fungal cell walls (FCW). (d) At a later stage, the host plant cells’ cytoplasm is partly degraded and the ultrastructure of the plastids (P) is altered. Ep = epidermis; FCW = fungal cell wall; GC = guard cell; H = hyphae of C. eurasiatica; I = intercellular space; N: nucleus; P = plastid; PCW = plant cell wall; S = septum; V = vacuole.

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