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RESULTS

(13)

DISEASE: Bacterial blight

HOST: Mulberry

Leaf with numerous small, dark brown lesions with chlorotic halos.

DISEASE: Bacterial blight

HOST: Mulberry

Foliage with small, dark lesions with large, yellowish halos.

DISEASE: Bacterial blight

HOST: Mulberry

Blighted foliage with yellowing and curling of leaves.

DISEASE: Bacterial wilt

HOST: Alfalfa

Longitudinal section of defined brown gum pockets on inner surface of root bark.

DISEASE: Bacterial wilt

HOST: Alfalfa

Infected plant (left) with typical symptoms of stunting and chlorosis. Other characteristic symptoms are spindly stems and small distorted leaflets. Healthy plant (right).

DISEASE: Bacterial wilt

HOST: Alfalfa

Diseased plant with chlorotic leaves.

DISEASE: Bacterial wilt

HOST: Alfalfa

Cross sections of diseased roots with defined brown gum pockets on inner surface of bark. Healthy root (upper left). Other sections represent increases in disease severity.

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.