Spruce bark damaged by Armillaria fungus

Spruce bark damaged by Armillaria fungus

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Credit: ASTRID & HANNS-FRIEDER MICHLER/SCIENCE PHOTO LIBRARY

Caption: Fungus-damaged wood. Section through spruce wood, Picea sp. , showing damage caused by honey fungus. Honey fungus (Armillaria mellea) is one of the most damaging parasites of trees, and is responsible for large timber losses. The fungus causes a white rot (seen here in the darker layers) which weakens and kills the trees, and no cure is known once the parasite is established. It can quickly spread from tree to tree by means of long rhizomorphs, bootlace-like cords which spread through the soil. The fungus is commonly seen as clumps of golden yellow mushrooms, which are edible when cooked.

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Keywords: armillaria, armillaria fung, armillaria fungus, armillaria mellea, botany, damaged, disease, diseases, fungus, honey fungus, in spruce wood, nature, parasite, pathogens, pathology, plant, plant pathology, spruce, spruce woo, tree, type, wood

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