RESULTS

(8)

FILTER

DISEASE: Bacterial seed and seedling rot

HOST: Geranium

Cotyledons with water-soaked spots.

Bacterial seed and seedling rot | Geranium

DISEASE: Bacterial seed and seedling rot

HOST: Geranium (Pelargonium sp.)

PATHOGEN: Paenibacillus sp.

SOURCE: A. Magyarosy, D. Thomas

DISEASE: Bacterial seed and seedling rot

HOST: Geranium

Rotted and discolored seeds (right). Healthy seeds (left).

Bacterial seed and seedling rot | Geranium

DISEASE: Bacterial seed and seedling rot

HOST: Geranium (Pelargonium sp.)

PATHOGEN: Paenibacillus sp.

SOURCE: A. Magyarosy, D. Thomas

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: 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