Xylophilus ampelinus

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Xylophilus ampelinus symptoms on grapevine (click on image to enlarge it)
Author(s): C.G. Panagopoulos, Agricultural University
Source: IPM Images

Xylophilus ampelinus (Panagopoulos) Willems et al.

Xylophilus ampelinus symptoms on grapevine leaf (click on image to enlarge it)
Author(s): C.G. Panagopoulos, Agricultural University
Source: IPM Images

The pathogen causes bacterial necrosis or blight of grapevine. Symptoms include cracks and cankers along the shoots, discolouration of the xylem tissues and angular necrotic lesions on the leaves. Infected canes and branches often die. Epidemics have been observed under cool and moist conditions. Wind, rain and sprinkler irrigation can spread the pathogen, apparently also pruning.

For management preventive control of the disease with copper bactericides has been emphasized, that is before the bacterium enters the plants. This treatment is aimed at the epiphytic phase of the disease and targets contaminations of leaves and shoots with the pathogen (Komatsu and Kondo, 2015).

Vernacular names
• English: bacterial blight of grapevine
bacterial necrosis of grapevine
• Español: marchitez bacteriana de la vid
• Français: brûlure bactérienne de la vigne

Synonyms:
Xanthomonas ampelina