Abstract
The production of citrus fruits has being constantly threatened by the bacterium Xanthomonas axonopodis pv. citri (Xac), the citrus canker disease agent. This bacterium, when in contact with host plants, induces canker lesions on leaves, fruits and branches. On the other hand, when this pathogen infects a non-host plant a necrotic reaction is induced at the infection site as a hypersensit…