In September 2010, leaves of oilseed rape (Brassica napus L.) with v-shaped, necrotic lesions on the leaf margins surrounded by yellow halos were collected. Symptoms were observed on the domestic cultivar Slavica (IFVC, Novi Sad) located in the Bačka region, Vojvodina, Serbia, from a 3-ha field.
In Yugoslavia, Xanthomonas campestris pv. campestris was isolated from forage kale in 1964 and cabbage in 1997 (1). Recently, the incidence and severity of black rot symptoms on cabbage, cauliflower, and kale have increased. Gram-negative, rod-shaped, motile bacteria were isolated from the diseased