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RESULTS

(11)

DISEASE: Bacterial leaf spot (Blight)

HOST: Begonia

Initial symptoms appear as small, blisterlike lesions. As lesions age, they enlarge, producing broad patches of necrotic leaf tissue.

DISEASE: Bacterial leaf spot (Blight)

HOST: Begonia

Advanced stage of disease with dark, large necrotic areas on leaves and interveinal chlorosis.

DISEASE: Black chaff (Bacterial leaf streak)

HOST: Barley

Black chaff is characterized by water-soaked and darkened glumes on barley heads and streaks and stripes on leaves.

DISEASE: Black chaff (Bacterial leaf streak)

HOST: Barley

Leaf with linear, water-soaked lesions that turn necrotic and brown. Flakes of dry bacterial exudate are apparent on the lesions. The pathogen also causes black glume of barley.

DISEASE: Black chaff (Bacterial leaf streak)

HOST: Wheat

Water-soaked stage of leaf streak.

DISEASE: Black chaff (Bacterial leaf streak)

HOST: Wheat

Interveinal brown streaks and blotches on wheat leaves, a late stage of disease. Symptoms may be confused with other diseases.

DISEASE: Black chaff (Bacterial leaf streak)

HOST: Wheat

Brownish black streaks and blotches on glumes.

DISEASE: Black chaff (Bacterial leaf streak)

HOST: Wheat

Leaves with blighted leaf tips, and blades with brownish red streaks.

DISEASE: Drippy gill

HOST: Mushroom

Drippy gill is characterized by small dark spots on gills with drops of bacterial ooze at the centers. Severe infection results in slimy areas and collapse of gills.