Lower leaves turning downward. Dark to light brown streaks may develop on the leaf midribs and eventually extend down the petiole to form a canker on the stem.Symptoms on fruit are small, white, scabby, raised lesions, often described as "bird's" eye.
The bacterium survives in leaf, shoot and fruit lesions that develop during the spring, and which also cause secondary infections. During warm, wet weather in spring and early summer, the bacterium oozes out of overwintering lesions and infects new growth via the stomal pores or wounds. The bacterium may also survive for various periods of time in the soil or associated with other hosts.
