What type of lesions are associated with bacterial brown spot?

• A. Sunken, irregular lesions
• B. Flat, yellow spots
• C. White, fluffy growths
• D. Dark, streaked wounds

Answer: (A)

Bacterial brown spot, often caused by a bacterial pathogen, is characterized by sunken, irregular lesions on the leaves of affected plants. These injuries typically appear as dark brown or black spots that ultimately cause the tissue to die, which illustrates the nature of the infection. The irregularity of the lesions reflects the way the bacteria infect the plant tissue, causing varying levels of damage in different areas.

In contrast, flat, yellow spots are typically associated with other diseases, such as viral infections or nutrient deficiencies. White, fluffy growths may indicate fungal infections, which present a different symptomatology compared to bacterial issues. Dark, streaked wounds could suggest physical damage or specific fungal infections rather than the distinct lesions produced by bacterial brown spot. Understanding the characteristic symptoms of bacterial diseases, such as brown spot, is crucial for accurate diagnosis and management in agricultural practices.