Black rot of flowering cabbage (Brassica oleracea var. acephala) caused by Xanthomonas campestris pv. campestris.

Abstract

An outbreak of a new bacterial disease of flowering cabbage (Brassica oleracea var. acephala) was recorded in Hyogo (1999) and Shizuoka (2000) prefectures, which is characterized by dark brown leaf spots with gray center and yellow V-shaped lesions at the leaf margins. The pathogen was identified as Xanthomonas campestris pv. campestris (Pammel 1895) Dowson 1939. We propose the disease name as black rot of flowering cabbage.