RESULTS

(6)

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DISEASE: Center rot

HOST: Onion

Early symptoms of disease are necrotic, bleached areas on young leaves that typically wilt.

Center rot | Onion

DISEASE: Center rot

HOST: Onion (Allium cepa)

PATHOGEN: Pantoea ananatis

SOURCE: R. Gitaitis

DISEASE: Center rot

HOST: Onion

Advanced stage of center rot. The bacterium has moved down from leaves into the bulb.

Center rot | Onion

DISEASE: Center rot

HOST: Onion (Allium cepa)

PATHOGEN: Pantoea ananatis

SOURCE: H. Schwartz

DISEASE: Center rot

HOST: Onion

Bulb with pale yellow, discolored decayed area.

Center rot | Onion

DISEASE: Center rot

HOST: Onion (Allium cepa)

PATHOGEN: Pantoea ananatis

SOURCE: H. Schwartz

DISEASE: Papaya dieback

HOST: Papaya

Dieback is characterized by terminal necrosis and death of the young and old plants.

Papaya dieback | Papaya

DISEASE: Papaya dieback

HOST: Papaya (Carica papaya)

PATHOGEN: 'Candidatus Phytoplasma australiense'

PATHOGEN SYNONYM: Phytoplasma Stolbur group

SOURCE: D. Teakle

DISEASE: Papaya dieback

HOST: Papaya

Death of growing point, a symptom of the disease.

Papaya dieback | Papaya

DISEASE: Papaya dieback

HOST: Papaya (Carica papaya)

PATHOGEN: 'Candidatus Phytoplasma australiense'

PATHOGEN SYNONYM: Phytoplasma Stolbur group

SOURCE: D. Teakle

DISEASE: Syringae leaf spot

HOST: Tomato

Leaves with brown necrotic lesions and chlorotic margins. Symptoms vary greatly among cultivars. Some have black or brown lesions with bright yellow, chlorotic areas and others do not have yellowing.

Syringae leaf spot | Tomato

DISEASE: Syringae leaf spot

HOST: Tomato (Lycopersicon esculentum)

PATHOGEN: Pseudomonas syringae pv. syringae

SOURCE: R. Gitaitis