Chestnut blight, a fungus called Cryphonectria parasitica-caused plant disease (formerly known as Endothia parasitica). brought by mistake from Asia.
These trees likewise develop orange bark with cankers after becoming infected, but they do not perish. The disease may continue to grow inside of these trees and release spores that could infect additional trees. Ascospores carried by the wind and, over a shorter distance, conidia dispersed by rain-splash action are two ways that the fungus spreads.
Through contaminated seed, seedlings can get diseased. A poison created by bacteria that invade the host stops the production of chlorophyll. When leaves rub against diseased ones while being cultivated, in the rain, or in the wind, bacteria can also be transferred to the unaffected leaves.
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