RESULTS

(8)

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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: Slippery skin

HOST: Onion

Rot progresses from the top of infected scales and eventually internal tissues rot. In early stages, the only external symptoms may be softening of the neck.

Slippery skin | Onion

DISEASE: Slippery skin

HOST: Onion (Allium cepa)

PATHOGEN: Burkholderia gladioli pv. alliicola

PATHOGEN SYNONYM: Pseudomonas gladioli pv. alliicola

SOURCE: H. Schwartz

DISEASE: Xanthomonas leaf blight

HOST: Onion

This was the first photo of onion leaf blight, which was considered a controversial finding for 10 years until an outbreak occurred in the West Indies.

Xanthomonas leaf blight | Onion

DISEASE: Xanthomonas leaf blight

HOST: Onion (Allium cepa)

PATHOGEN: Xanthomonas axonopodis pv. allii

PATHOGEN SYNONYM: Xanthomonas campestris pv. allii

SOURCE: A. Alvarez

DISEASE: Xanthomonas leaf blight

HOST: Onion

Diseased leaf with necrotic internal tissues.

Xanthomonas leaf blight | Onion

DISEASE: Xanthomonas leaf blight

HOST: Onion (Allium cepa)

PATHOGEN: Xanthomonas axonopodis pv. allii

PATHOGEN SYNONYM: Xanthomonas campestris pv. allii

SOURCE: A. Alvarez

DISEASE: Xanthomonas leaf blight

HOST: Onion

Onions with brown, necrotic, blighted leaves.

Xanthomonas leaf blight | Onion

DISEASE: Xanthomonas leaf blight

HOST: Onion (Allium cepa)

PATHOGEN: Xanthomonas axonopodis pv. allii

PATHOGEN SYNONYM: Xanthomonas campestris pv. allii

SOURCE: H. Schwartz

DISEASE: Xanthomonas leaf blight

HOST: Onion

Onions with severely blighted leaves.

Xanthomonas leaf blight | Onion

DISEASE: Xanthomonas leaf blight

HOST: Onion (Allium cepa)

PATHOGEN: Xanthomonas axonopodis pv. allii

PATHOGEN SYNONYM: Xanthomonas campestris pv. allii

SOURCE: H. Schwartz

DISEASE: Xanthomonas leaf blight

HOST: Onion

Severely blighted onion leaves.

Xanthomonas leaf blight | Onion

DISEASE: Xanthomonas leaf blight

HOST: Onion (Allium cepa)

PATHOGEN: Xanthomonas axonopodis pv. allii

PATHOGEN SYNONYM: Xanthomonas campestris pv. allii

SOURCE: H. Schwartz