Lesions typically get larger as the infection worsens, and the enlarged lesions then form translucent spots. These angular spots typically exude an ooze of bacteria that appears as a white and flakey film once dry. [2] Lesions on the upper surface of leaves will also become visible with time.
As an illness progresses, lesions expand and eventually form transparent patches. The angular patches typically release a bacterial discharge that hardens into a white, flaky coating upon drying. Furthermore, lesions on the top surface of leaves become visible as the condition develops.