Powdery mildew, SEM

Powdery mildew, SEM

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Caption: Powdery mildew. Coloured scanning electron micrograph (SEM) of the parasitic powdery mildew Erysiphe sp. on the stalk of a plant. The orange needle-like structures are thorns on the surface of the stalk. Hyphae (grey) are the tangled filaments that form the fungal colony. Rising up from the hyphae are asexual spore-bearing structures called conidiophores. Powdery mildew is so-called because of the numerous white spores it produces. It is an agricultural pest, which parasitizes leaves of grasses, cereal and vegetable plants. Magnification: x170 at 6x7cm size.

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Keywords: agricultural pest, botany, coloured, conidiophore, disease, diseases, erysiphe sp., fungal, fungus, hypha, hyphae, nature, pathogens, pathology, plant, plant parasite, powdery mildew, scanning electron micrograph, sem, stalk, surface, thorn, thorns

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