RESULTS

(7)

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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: Pseudomonas leaf spot

HOST: Marigold

Marigolds with yellow apical chlorosis attributed to toxin production by the pathogen.

Pseudomonas leaf spot | Marigold

DISEASE: Pseudomonas leaf spot

HOST: Marigold (Tagetes erecta)

PATHOGEN: Pseudomonas syringae pv. tagetis

SOURCE: R. Durbin

DISEASE: Pseudomonas leaf spot

HOST: Marigold

Chlorotic leaves with total loss of chlorophyll. Disease is also known as toxic chlorosis.

Pseudomonas leaf spot | Marigold

DISEASE: Pseudomonas leaf spot

HOST: Marigold (Tagetes erecta)

PATHOGEN: Pseudomonas syringae pv. tagetis

SOURCE: R. Durbin

DISEASE: Pseudomonas leaf spot

HOST: Marigold

Plants with bright yellow apical chlorosis.

Pseudomonas leaf spot | Marigold

DISEASE: Pseudomonas leaf spot

HOST: Marigold (Tagetes patula)

PATHOGEN: Pseudomonas syringae pv. tagetis

SOURCE: R. Durbin

DISEASE: Pseudomonas leaf spot

HOST: Primrose

Leaf with brownish red spots and reddening of adjacent areas. Disease begins as small, water-soaked lesions that later coalesce into large necrotic spots.

Pseudomonas leaf spot | Primrose

DISEASE: Pseudomonas leaf spot

HOST: Primrose (Primula sp.)

PATHOGEN: Pseudomonas syringae pv. primulae

SOURCE: APS

DISEASE: X-disease (Peach yellow leaf roll)

HOST: Peach

Peach twig with yellow, curled (rolled) leaves.

X-disease (Peach yellow leaf roll) | Peach

DISEASE: X-disease (Peach yellow leaf roll)

HOST: Peach (Prunus persica)

PATHOGEN: 'Candidatus Phytoplasma mali'

PATHOGEN SYNONYM: Phytoplasma Apple proliferation group

SOURCE: W. Sinclair