What is lesion in plant pathology?

In plant pathology, a lesion refers to a localized area of damage or abnormality on a plant's tissue, often resulting from disease, insect infestation, or environmental stress. Lesions can manifest as spots, blights, or cankers, and they often indicate the presence of pathogens such as fungi, bacteria, or viruses. The appearance and severity of lesions can significantly impact a plant's health, growth, and overall yield. Monitoring and managing lesions is crucial for effective plant disease management.