RESULTS

(5)

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DISEASE: Bacterial brown rot

HOST: Orchid

Phalaenopsis orchid with yellowish brown spot on leaf (left), an early stage of disease.

Bacterial brown rot | Orchid

DISEASE: Bacterial brown rot

HOST: Orchid (Phalaenopsis sp.)

PATHOGEN: Acidovorax cattleyae

PATHOGEN SYNONYM: Acidovorax avenae subsp. cattleyae

SOURCE: R. McMillan

DISEASE: Bacterial brown rot

HOST: Orchid

Leaves of Phalaenopsis orchid with advanced stage of decay.

Bacterial brown rot | Orchid

DISEASE: Bacterial brown rot

HOST: Orchid (Phalaenopsis sp.)

PATHOGEN: Acidovorax cattleyae

PATHOGEN SYNONYM: Acidovorax avenae subsp. cattleyae

SOURCE: R. McMillan

DISEASE: Phony disease (Phony peach)

HOST: Peach

Tree with characteristic reduced growth. Foliage is dark green, then turns yellowish. Twigs become brittle and branches die back. Fruit are small.

Phony disease (Phony peach) | Peach

DISEASE: Phony disease (Phony peach)

HOST: Peach (Prunus persica)

PATHOGEN: Xylella fastidiosa

SOURCE: P. C. Anderson

DISEASE: Phony disease (Phony peach)

HOST: Peach

Twigs on diseased trees have shortened internodes and increased lateral branching.

Phony disease (Phony peach) | Peach

DISEASE: Phony disease (Phony peach)

HOST: Peach (Prunus persica)

PATHOGEN: Xylella fastidiosa

SOURCE: M. Davis

DISEASE: Sweet potato little leaf

HOST: Sweet potato

Infected plant (left) and healthy plant (right).

Sweet potato little leaf | Sweet potato

DISEASE: Sweet potato little leaf

HOST: Sweet potato (Ipomoea batatas)

PATHOGEN: 'Candidatus Phytoplasma aurantifolia'

PATHOGEN SYNONYM: Phytoplasma Peanut witches'-broom group

SOURCE: R. McCoy, M. Davis