Brown rot fungus, Sclerotinia

Brown rot fungus, Sclerotinia

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Caption: False-colour scanning electron micrograph of the fungus Sclerotinia fructigena, a fungus causing brown rot in apples, pears and some other fruits. Here, on the surface of an apple, fungal hyphae are packed densely in a sclerotium (a structure of rapid growth for survival). Individual strands of hyphae in this aggregation consist of cylindrical cells arranged end-to-end. Younger cells (yellow) are formed from mature cells (green). This fungus spreads by airborne spores which blow onto fruit and grow hyphae. Spore production is stimulated by light, forming concentric zones of infection on the fruit where it corresponds to daily illumination. Magnification: x500 at 6x4.5cm size.

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Keywords: apple, brown, brown rot, eumycota, false-coloured, fungal, fungi, fungus, mycology, nature, naturemycology, rot, scanning electron micrograph, sclerotini, sclerotinia, sclerotinia fructigena, sem, type

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