What are common symptoms of the Tobacco/Tomato mosaic tobamovirus infection?

Mosaic and necrotic spots are hallmark symptoms of Tobacco/Tomato mosaic tobamovirus infection. This virus typically induces a characteristic mosaic pattern on the leaves of infected plants, which is visible as irregular light and dark green areas. This mosaic effect arises from uneven pigment development due to the viral interference with the plant's normal physiological processes. Additionally, necrotic spots can develop, leading to tissue damage and potential leaf drop.

Understanding these symptoms is crucial for identifying infections early so that appropriate management strategies can be implemented to curb the spread of the virus and reduce crop loss. The presence of these signs often signifies that the plant is under stress due to viral activity, which can impact its overall health and productivity.