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RESULTS

(33)

DISEASE: Bacterial foot rot

HOST: Rice

The disease causes sheaths to turn dark brown and rot; dead leaves droop. Nodes, culms, and crowns also decay, and infected tillers are easily detached from the crown. Culms and internodes turn black.

DISEASE: Bacterial foot rot

HOST: Rice

Decayed culms (right) and healthy culms (left). Leaf sheaths of infected plants exhibit dark brown decay and attached leaves turn yellow and wilt.

DISEASE: Bacterial kernel blight (Leaf blight)

HOST: Barley

Dark, brown discolored kernels at the embryo end and posterior surface.

DISEASE: Bacterial leaf blight

HOST: Barley

Diseased barley plants with typical bleaching of flag leaves. Initial symptoms are water-soaked lesions that later coalesce. Eventually, the entire leaf becomes necrotic and edges roll inward.

DISEASE: Bacterial leaf spot

HOST: Rice

Stripes on leaves and leaf sheaths, which turn brown in time. They occur interveinally, along midribs and leaf margins.

DISEASE: Bacterial leaf streak

HOST: Rice

Severely diseased leaves with light brown streaks.

DISEASE: Bacterial leaf streak

HOST: Rice

Brownish lesions with tiny droplets of bacterial ooze, resulting from artificial inoculation of the pathogen.

DISEASE: Bacterial leaf streak

HOST: Rice

Copious droplets of bacterial ooze on infected leaf margin (right), typical of advanced stage of disease. Healthy part of leaf (left) has clear guttation fluid.

DISEASE: Bacterial palea browning

HOST: Rice

Early stage of disease with browning of palea.