RESULTS

(7)

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DISEASE: Bacterial bud and petal blight

HOST: Orchid

Miltonia orchid with brownish necrotic areas around edges of flower petals.

Bacterial bud and petal blight | Orchid

DISEASE: Bacterial bud and petal blight

HOST: Orchid (Miltonia sp.)

PATHOGEN: Acidovorax cattleyae

SOURCE: R. Raabe

DISEASE: Bacterial bud and petal blight

HOST: Orchid

Miltonia orchid with diseased water-soaked flower buds.

Bacterial bud and petal blight | Orchid

DISEASE: Bacterial bud and petal blight

HOST: Orchid (Miltonia sp.)

PATHOGEN: Acidovorax cattleyae

SOURCE: R. Raabe

DISEASE: Citrus stubborn disease

HOST: Citrus (sp. unknown)

Characteristic symptoms of thickened peel at peduncle end and aborted seeds.

Citrus stubborn disease | Citrus (sp. unknown)

DISEASE: Citrus stubborn disease

HOST: Citrus (sp. unknown) (Citrus sp.)

PATHOGEN: Spiroplasma citri

SOURCE: APS

DISEASE: Citrus stubborn disease

HOST: Citrus (Orange)

Severely stunted sweet orange tree. Foliage is dense and abnormally upright. Leaves may be cupped and unusually thick. They also may be chlorotic and mottled.

Citrus stubborn disease | Citrus (Orange)

DISEASE: Citrus stubborn disease

HOST: Citrus (Orange) (Citrus sinensis)

PATHOGEN: Spiroplasma citri

SOURCE: S. M. Garnsey

DISEASE: Citrus stubborn disease

HOST: Citrus (Orange)

Fruit from a diseased tree are frequently lopsided or acorn-shaped, usually few and small. They may not color at stem end.

Citrus stubborn disease | Citrus (Orange)

DISEASE: Citrus stubborn disease

HOST: Citrus (Orange) (Citrus sinensis)

PATHOGEN: Spiroplasma citri

SOURCE: J. M. Bove, M. Garnier

DISEASE: Citrus stubborn disease

HOST: Citrus (Orange)

Sweet orange exhibiting off-season flowering and crop heterogeneity. Diseased trees generally have shoots with shortened internodes, which lead to rosettes with cupped leaves.

Citrus stubborn disease | Citrus (Orange)

DISEASE: Citrus stubborn disease

HOST: Citrus (Orange) (Citrus sinensis)

PATHOGEN: Spiroplasma citri

SOURCE: J. M. Bove, M. Garnier

DISEASE: Dogwood stunt

HOST: Dogwood

Diseased plant with small leaves (left).

Dogwood stunt | Dogwood

DISEASE: Dogwood stunt

HOST: Dogwood (Cornus sp.)

PATHOGEN: 'Candidatus Phytoplasma asteris'

PATHOGEN SYNONYM: Phytoplasma Aster yellows group

SOURCE: W. Sinclair