RESULTS

(5)

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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.

Bacterial leaf spot (Blight) | Begonia

DISEASE: Bacterial leaf spot (Blight)

HOST: Begonia (Begonia sp.)

PATHOGEN: Xanthomonas axonopodis pv. begoniae

PATHOGEN SYNONYM: Xanthomonas campestris pv. begoniae

SOURCE: APS

DISEASE: Bacterial leaf spot (Blight)

HOST: Begonia

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

Bacterial leaf spot (Blight) | Begonia

DISEASE: Bacterial leaf spot (Blight)

HOST: Begonia (Begonia sp.)

PATHOGEN: Xanthomonas axonopodis pv. begoniae

PATHOGEN SYNONYM: Xanthomonas campestris pv. begoniae

SOURCE: APS

DISEASE: Ear rot

HOST: Corn (Maize)

Rot at apical end of ear.

Ear rot | Corn (Maize)

DISEASE: Ear rot

HOST: Corn (Maize) (Zea mays)

PATHOGEN: Pseudomonas marginalis

SOURCE: L. Fucikovsky

DISEASE: Marginal leaf blight

HOST: Lettuce

Marginal leaf blight first appears as slimy wilting of leaf margins. Small, reddish lesions may be seen on leaf blades. Infected tissues turn brown to black in time.

Marginal leaf blight | Lettuce

DISEASE: Marginal leaf blight

HOST: Lettuce (Lactuca sativa)

PATHOGEN: Pseudomonas marginalis

SOURCE: L. Fucikovsky

DISEASE: Rugose leaf curl

HOST: Clover

Two rugose, distorted white clover leaves and a healthy leaf. Rugose leaf curl is caused by an unidentified phloem-infecting bacterium.

Rugose leaf curl | Clover

DISEASE: Rugose leaf curl

HOST: Clover (Trifolium repens)

PATHOGEN: Phloem-infecting bacterium

SOURCE: D. Teakle