Virginia Commercial Pesticide Applicators CORE Exam

Which of the following symptoms is commonly associated with viral plant diseases?

1. Stunted growth and wilting

2. Leaf discoloration and mold

3. Root decay and excessive growth

4. Increased pest attraction

The correct answer is: Stunted growth and wilting

The symptom commonly associated with viral plant diseases is stunted growth and wilting. Viruses affect plants by disrupting normal cellular functions, leading to a range of visible symptoms. Stunted growth occurs because the virus interferes with the plant's ability to absorb nutrients and water effectively, which hampers overall development. Wilting can arise from the plant's compromised vascular system, resulting in an inability to maintain turgor pressure. Stunted growth and wilting are key indicators of viral infections as these diseases often lead to systemic issues within the plant, causing it to fail to thrive. The affected plants may exhibit a lack of vigor and more pronounced wilting under environmental stresses due to their inability to properly conduct water and nutrients. Other symptoms such as leaf discoloration and mold typically point to fungal or bacterial infections, not viral ones. Root decay and excessive growth are more commonly associated with various other plant stressors or infections rather than viruses. Finally, increased pest attraction might occur indirectly but is not a direct symptom of viral diseases, as other factors influence pest dynamics.