Clavibacter michiganensis pv

Bacterial Disease

Clavibacter michiganensis pv

Bacterial Disease

Clavibacter michiganensis pv

Bacterial Disease

Clavibacter michiganensis pv

Bacterial Disease

Initially, symptoms of bacterial canker on leaves appear on the leaflet margins where they become yellow and necrotic and appear as though they have been burned on the edges. When wet, lesions may appear water-soaked on the underside of the leaves.

Factors other than population size recently shown to induce a shift from endophytic to pathogenic status include a warm temperature (much faster at 28°C than 15 or 35°C), a marked fluctuation in day/night temperatures and high humidity. The stress of a high fruit load also seems to trigger onset of the wilting phase.