XCC (Xanthomonas campestris pv. campestris)

Xanthomonas campestris pv.campestris (Xcc) is a bacterium that causes “black rot”, one of the most serious diseases of Brassicaceae, which includes economically important species of cultivated vegetables, ornamental plants and wild herbs.

The primary source of inoculum is Xcc-infected seed. During germination, the seedling becomes infected; the bacteria progress through the vascular system to young stems and leaves, where the disease manifests as typical V-shaped necrotic lesions extending from the leaf margins and blackening of the vascular tissues.

Under humid conditions, bacteria present in guttation droplets can be spread to nearby plants by wind, rain, water splashes, and mechanical equipment.

When the infection reaches the siliques, the seeds will also be infected.

The fight against black rot is essentially based on prevention, through microbiological analysis of seeds, prophylaxis and correct agronomic practices.

* Patent licenses WO 00/28082, WO 01/34790, WO 01/77317, WO 02/24902, WO 01/34838 ** Industrial invention patent no. 0001425753 dated 09.11.2016