The term "canker" is used to describe a killed area or blister on the bark, a branch or the trunk of an infected tree. The canker-causing fungi commonly invade wounded or injured bark tissues to form a canker and subsequently produce reproductive structures called fruiting bodies. Dozens of species of fungi cause canker disease.Canker and anthracnose are general terms for a large number of different plant diseases, characterised by broadly similar symptoms including the appearance of small areas of dead tissue, which grow slowly, often over a period of years. Some are of only minor consequence, but others are ultimately lethal, and of major economic importance in agriculture and horticulture.
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