Give an example :
A bacterial disease of plant

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for an example of a bacterial disease that affects plants. This means we need to identify a specific disease caused by bacteria.

2. **Identifying a Bacterial Disease**: One well-known bacterial disease of plants is citrus canker. This disease is specifically associated with citrus plants.

3. **Bacteria Responsible**: The disease citrus canker is caused by the bacterium *Xanthomonas citri*. It is important to note the name of the bacterium as it directly relates to the disease.

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