What symptom is NOT associated with Bean common mosaic potyvirus?

The symptom of root rot is not associated with Bean common mosaic potyvirus, which primarily affects the leaves and stems of the plant. This virus causes distinct visual symptoms primarily on the foliage, such as a mosaic pattern, puckering of leaves, and distortion and rolling of leaves. These symptoms result from the virus's interference with the plant's normal growth processes, leading to visible alterations that can often be easily observed in infected plants.

In contrast, root rot is typically caused by fungal pathogens or unfavorable soil conditions and is characterized by decaying roots, which is not a symptom directly linked to viral infections like Bean common mosaic potyvirus. Thus, recognizing the specific symptoms of viral infection versus those caused by other pathogens is critical for accurate diagnosis and management in plant disease control.