RESULTS

(8)

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DISEASE: Bacterial leaf streak and bulb rot

HOST: Onion

The disease is characterized by dark spots on wrapper scales and/or reddish brown discoloration of inner scales.

Bacterial leaf streak and bulb rot | Onion

DISEASE: Bacterial leaf streak and bulb rot

HOST: Onion (Allium cepa)

PATHOGEN: Pseudomonas viridiflava

SOURCE: R. Gitaitis

DISEASE: Bacterial leaf streak and bulb rot

HOST: Onion

Onion with dead and rotted leaf at base of stem. Typical symptoms are water-soaked, dark green lesions that become oval with time, along with streaks and tipburn.

Bacterial leaf streak and bulb rot | Onion

DISEASE: Bacterial leaf streak and bulb rot

HOST: Onion (Allium cepa)

PATHOGEN: Pseudomonas viridiflava

SOURCE: H. Schwartz

DISEASE: Bacterial leaf streak and bulb rot

HOST: Onion

Browning and decay of bulb following inoculation with Pseudomonas viridiflava.

Bacterial leaf streak and bulb rot | Onion

DISEASE: Bacterial leaf streak and bulb rot

HOST: Onion (Allium cepa)

PATHOGEN: Pseudomonas viridiflava

SOURCE: R. Gitaitis

DISEASE: Bacterial leaf streak and bulb rot

HOST: Onion

Close-up of diseased leaves.

Bacterial leaf streak and bulb rot | Onion

DISEASE: Bacterial leaf streak and bulb rot

HOST: Onion (Allium cepa)

PATHOGEN: Pseudomonas viridiflava

SOURCE: R. Gitaitis

DISEASE: Bacterial leaf streak and bulb rot

HOST: Onion

Bulb rot with gray, bluish symptoms. Reddish brown discolorations also may occur.

Bacterial leaf streak and bulb rot | Onion

DISEASE: Bacterial leaf streak and bulb rot

HOST: Onion (Allium cepa)

PATHOGEN: Pseudomonas viridiflava

SOURCE: R. Gitaitis

DISEASE: Bacterial mosaic

HOST: Wheat

Diseased leaves with mosaic pattern exhibiting various amounts of yellowing. Leaves were artificially inoculated by vacuum infiltration.

Bacterial mosaic | Wheat

DISEASE: Bacterial mosaic

HOST: Wheat (Triticum aestivum)

PATHOGEN: Clavibacter michiganensis subsp. tessellarius

SOURCE: A. Vidaver

DISEASE: Bacterial palea browning

HOST: Rice

Early stage of disease with browning of palea.

Bacterial palea browning | Rice

DISEASE: Bacterial palea browning

HOST: Rice (Oryza sativa)

PATHOGEN: Pantoea agglomerans

PATHOGEN SYNONYM: Erwinia herbicola

SOURCE: K. Ozaki, M. Goto

DISEASE: Bacterial palea browning

HOST: Rice

Browning of palea begins with water-soaked lesions that later turn dark brown. Infected grains become brown after milling.

Bacterial palea browning | Rice

DISEASE: Bacterial palea browning

HOST: Rice (Oryza sativa)

PATHOGEN: Pantoea agglomerans

PATHOGEN SYNONYM: Erwinia herbicola

SOURCE: T. Mew