Bacterial leaf stripe — Arecanut

Symptoms

Dark-green, water-soaked lesions develop on the leaf lamina. The lesions may appear as translucent, narrow linear markings or stripes. The affected stripes are distinguishable from the surrounding healthy leaf tissue. A creamy-white exudate appears on the corresponding lower surface of the leaf. The exudate is slimy while wet. As the exudate dries, it becomes waxy. The affected leaf tissue subsequently develops necrosis. Necrosis may progress along the affected portions of the leaf. In severe cases, the infection causes partial blighting of the leaf. Under extreme conditions, the entire leaf may become blighted. Severe infection may cause the affected plant to succumb.