Verticillium wilt primarily affects which part of the plant?

Verticillium wilt primarily affects the stems of the plant. This disease, caused by soil-borne fungi, disrupts the vascular system of the plant, which is responsible for transporting water and nutrients. When the fungus infects the wood tissues in the stem, it can lead to wilting, yellowing of leaves, and ultimately, plant decline or death.

The impact on the stems is critical because a healthy stem is essential for the overall vitality of the plant, as it supports the leaves and flowers while supplying them with necessary resources. Problems at the stem level often manifest through symptoms that can be observed above ground, affecting the overall health of the plant. Thus, recognizing that Verticillium wilt primarily targets the stems helps in diagnosing and managing the disease effectively.