1. Diseases associated with this genus include : necrotic lesions on leaves. 2. Tissue samples from necrotic lesions are examined by microscopy. 3. Necrotic lesions are caused by invasion of blood vessels leading to thrombosis and infarcation.4. These streaks enlarge and coalesce forming necrotic lesions with light gray centres and yellow perimeters. 5. Also, a black necrotic lesion known as an eschar develops where the chigger fed. 6. The roots will also exhibit necrotic lesions . 7. The necrotic lesions can cause death to the plant structure and plant as a whole. 8. As the plant grows, it often shows stunting, and necrotic lesions begin to form on the leaves. 9. The necrotic lesions , and there is even question as to whether the lesions observed in the original study were necrotic. 10. The brain is the most common site of secondary infection but necrotic lesions may also form in the spleen and heart.
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