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RESULTS

(11)

DISEASE: Goss's bacterial wilt and blight

HOST: Corn (Maize)

Wilted, dying plants. Leaves have gray to light yellow stripes and irregular margins that follow leaf veins. Systemically infected plants usually have orange vascular bundles.

DISEASE: Goss's bacterial wilt and blight

HOST: Corn (Maize)

The disease causes necrotic leaf lesions, which typically have dark flecks (freckles) within the lesions (not seen here).

DISEASE: Phytoplasma disease

HOST: Armeria

Phytoplasma-infected armeria (left and right) compared with healthy plant (center).

DISEASE: Phytoplasma disease

HOST: Daffodil

Phytoplasma disease of daffodil. Healthy (right).

DISEASE: Phytoplasma disease

HOST: Gayfeather

Gayfeather with phyllody of flowers.

DISEASE: Phytoplasma disease

HOST: Stock

The disease causes malformation and arrested development of flowers.

DISEASE: X-disease

HOST: Peach

Typical symptoms of diseased tree with yellowing of leaves. Leaves become necrotic and dehisce.

DISEASE: X-disease

HOST: Peach

Late stage of leaf infection. Red-yellow blotches appear after initial water-soaking of leaves. Margins roll upward and leaves appear tattered.

DISEASE: X-disease

HOST: Peach

Stunted foliage (left) with some necrosis and small angular fruit. Healthy foliage and fruit (right).