Genodiversity of Xanthomonas campestris pv. campestris isolated from leaves of Brassicaceae plants

Abstract

Brassicas are a significant source of edible vegetables and is the third most important source of oil on the world level. Black rot, caused by the bacterium Xanthomonas campestris pv. campestris (XCC) represents the most destructive Brassicas diseases, generally. The bacteria is widespread on all continents, and is present in our country, especially at the places where Brassicas are grown in monoculture. Particularly susceptible are cabbage local genotypes, which are highly appreciated by consumers. Given the importance, frequency and distribution of XCC, there was a need to study the diversity of this pathogen on cabbage, cauliflower, kale, broccoli and oil seed rape. Monitoring was conducted from 2014 to 2017 on the territory of the Republic of Serbia. From different Brassicas 82 bacterial isolates from leaves were collected. All isolates form yellow colonies on the YDC medium and based on biochemical-physiological characteristics were identified preliminarily as XCC.