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Powdery mildew, SEM

Powdery mildew, SEM


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Powdery mildew, SEM

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

Science Photo Library features Science and Medical images including photos and illustrations

Media ID 9194087

© POWER AND SYRED/SCIENCE PHOTO LIBRARY

Agricultural Pest Conidiophore Diseases Fungal Fungus Hypha Hyphae Pathogens Pathology Stalk Surface Thorn Thorns


EDITORS COMMENTS
This print showcases the intricate world of powdery mildew, a parasitic fungus that wreaks havoc on various plants. In this coloured scanning electron micrograph (SEM), we are granted a close-up view of Erysiphe sp. , one type of powdery mildew, as it colonizes the stalk of a plant. The image reveals an array of fascinating details. The orange needle-like structures adorning the surface of the stalk catch our attention immediately - these are thorns, serving as natural defenses against potential threats. Meanwhile, grey hyphae form a tangled web-like structure, representing the fungal colony's growth and spread. Rising above the hyphae are conidiophores, which bear asexual spores responsible for powdery mildew's characteristic white appearance. These countless spores give rise to its name and serve as vehicles for further infection. Powdery mildew is notorious for its agricultural impact, targeting grasses, cereal crops, and vegetable plants alike. As an unwelcome guest in fields and gardens worldwide, it poses significant challenges to farmers and gardeners who strive to protect their precious harvests from this relentless pathogen. Through this mesmerizing SEM image captured at 170 times magnification on a 6x7cm scale by Science Photo Library, we gain insight into the hidden world where plant parasites like powdery mildew thrive. It serves as both an educational tool for understanding diseases in botany and agriculture while also reminding us

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