Rust fungus spores, SEM

Rust fungus spores, SEM

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Caption: Rust fungus spores. Coloured scanning electron micrograph (SEM) of two spores (reproductive cells) of the rust fungus Gymnosporangium sabinae, on the underside of a pear tree leaf. Rusts are parasitic fungi that cause some of the most destructive plant diseases. The disease appears as numerous rusty, orange spots that rupture the epidermal layers of the leaves. The fungus rarely causes the tree to die but it greatly reduces its ability to photosynthesize (produce food from sunlight), often leading to severely reduced yields. Magnification: x1100 when printed 10 centimetres wide.

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Keywords: 2, biological, biology, botanical, botany, cells, coloured, condition, disease, diseases, disorder, duo, false-coloured, flora, fungus, gymnosporangium, gymnosporangium sabinae, leaf, leaf damage, mold, mould, mouldy, mycology, nature, pair, parasite, parasitic, pathogens, pathological, pathology, pear tree, plant, plant pathology, reproduction, reproductive cell, rust, rust fungus, scanning electron micrograph, scanning electron microscope, sem, spore, spores, two

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