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Beech bark disease is a disease that causes mortality and defects in beech trees in the eastern United States, Canada and Europe. [ 1 ] [ 2 ] [ 3 ] In North America , the disease occurs after extensive bark invasion by Xylococculus betulae and the beech scale insect , Cryptococcus fagisuga . [ 4 ]
Aleurodiscus oakesii on white oak bark, found in Illinois, US. Aleurodiscus oakesii is a cluster of small, gray-white, irregular cup-shaped saprotrophic fungi that grows on decaying hardwood tree bark. This fungus may also be called hophornbeam discs, [1] and it causes smooth patch disease.
Cryptostroma corticale is a species of fungus that causes sooty bark disease of maples, particularly sycamore (Acer pseudoplatanus).The spores grow profusely under the bark of affected trees or stacked logs.
The fungus is thought to clog up a tree’s vascular system, depriving it of water and nutrients. At first, the fungus grows stealthily, undetected, underneath a tree’s bark. Eventually, the ...
The fungus can infect seedlings and typically colonizes under the bark of the trees. [1] Since the fungus infects under the bark, the signs of the pathogen aren't visible until the bark sheds off in response to the physical pressure imposed by the growthing pathogen; this typically happens in the transition between spring and summer. [ 1 ]
A chestnut tree that has been felled, with blight on its inner bark and trunk. The fungus enters through wounds on susceptible trees and grows in and beneath the bark, eventually killing the cambium all the way around the twig, branch, or trunk. [31] The first symptom of C. parasitica infection is a