Which of the following is an example of a Nematode Disease?

Which of the following is an example of a Nematode Disease?

• A. Pine Wilt
• B. Powdery Mildew
• C. Black Spot
• D. Root Rot

Answer: (A)

Pine Wilt is identified as a nematode disease because it is caused by the presence of the plant-parasitic nematode known as Ditylenchus dipsaci. This organism infects and damages the pine trees, leading to symptoms such as wilting, browning of needles, and ultimately tree death. The nematode disrupts the plant's ability to transport water and nutrients, which is characteristic of nematode-related diseases. In contrast, the other options refer to diseases caused by different pathogens. Powdery Mildew is primarily a fungal infection, Black Spot is a disease commonly associated with certain fungi affecting roses, and Root Rot can be caused by a variety of pathogens, including fungi and bacteria, but not specifically nematodes. Thus, Pine Wilt stands out as the clear example of a nematode disease.

Pine Wilt is identified as a nematode disease because it is caused by the presence of the plant-parasitic nematode known as Ditylenchus dipsaci. This organism infects and damages the pine trees, leading to symptoms such as wilting, browning of needles, and ultimately tree death. The nematode disrupts the plant's ability to transport water and nutrients, which is characteristic of nematode-related diseases.

In contrast, the other options refer to diseases caused by different pathogens. Powdery Mildew is primarily a fungal infection, Black Spot is a disease commonly associated with certain fungi affecting roses, and Root Rot can be caused by a variety of pathogens, including fungi and bacteria, but not specifically nematodes. Thus, Pine Wilt stands out as the clear example of a nematode disease.