RESULTS

(5)

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DISEASE: Australian citrus dieback

HOST: Citrus (Lime)

Severe decline, a late stage of disease. The disease spreads slowly in mature trees, progressing faster in young trees.

Australian citrus dieback | Citrus (Lime)

DISEASE: Australian citrus dieback

HOST: Citrus (Lime) (Citrus sp.)

PATHOGEN: 'Candidatus Phytoplasma australiense'

PATHOGEN SYNONYM: Phytoplasma Stolbur group

SOURCE: P. Broadbent

DISEASE: Bacterial blast and black pit

HOST: Citrus (Lime)

Characteristic symptoms of brownish black lesions on twigs and leaves (blast), starting with infection of petioles. Black pit refers to brown to black sunken spots on fruit, 5 to 20 mm in diameter.

Bacterial blast and black pit | Citrus (Lime)

DISEASE: Bacterial blast and black pit

HOST: Citrus (Lime) (Citrus sp.)

PATHOGEN: Pseudomonas syringae pv. syringae

SOURCE: P. Broadbent

DISEASE: Bacterial leaf blight

HOST: Konjac (Devil's tongue)

Severely blighted leaves of konjac.

Bacterial leaf blight | Konjac (Devil's tongue)

DISEASE: Bacterial leaf blight

HOST: Konjac (Devil's tongue) (Amorphophallus konjaci)

PATHOGEN: Acidovorax konjaci

PATHOGEN SYNONYM: Pseudomonas avenae subsp. konjaci

SOURCE: N. Hayashi, M. Goto

DISEASE: Bacterial leaf spot

HOST: Rhododendron

Leaf with light brown, irregularly shaped spots.

Bacterial leaf spot | Rhododendron

DISEASE: Bacterial leaf spot

HOST: Rhododendron (Rhododendron catawbiense 'Album')

PATHOGEN: Pseudomonas cichorii

SOURCE: W. Uddin, W. Sinclair

DISEASE: Witches'-broom

HOST: Citrus (Lime)

Lime tree with compact, small leaves (witches'-broom). Leaves on older brooms dry out and eventually drop, leaving dead, bare branches. There are no flowers or fruit on brooms.

Witches'-broom | Citrus (Lime)

DISEASE: Witches'-broom

HOST: Citrus (Lime) (Citrus sp.)

PATHOGEN: 'Candidatus Phytoplasma aurantifolia'

PATHOGEN SYNONYM: Phytoplasma Peanut witches'-broom group

SOURCE: J. Bove, M. Garnier