RESULTS

(25)

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DISEASE: Apple proliferation

HOST: Apple

Spring form of the adult black-veined psyllid, Cacopsylla melanoneura, a vector of apple proliferation. In winter, adults are more greenish in color.

Apple proliferation | Apple

DISEASE: Apple proliferation

HOST: Apple (Malus domestica)

PATHOGEN: 'Candidatus Phytoplasma mali'

PATHOGEN SYNONYM: Phytoplasma Apple proliferation group

SOURCE: M. Wolf, W. Schweigkofler

DISEASE: Apple proliferation

HOST: Apple

Typical apple proliferation symptom of witches'-broom resulting from suppression of apical dominance and growth of dormant axillary buds. Branches are not usually bent down as shown here.

Apple proliferation | Apple

DISEASE: Apple proliferation

HOST: Apple (Malus domestica)

PATHOGEN: 'Candidatus Phytoplasma mali'

PATHOGEN SYNONYM: Phytoplasma Apple proliferation group

SOURCE: M. Wolf, W. Schweigkofler

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 spot

HOST: Citrus (sp. unknown)

Leaf with flat, spreading lesions.

Bacterial leaf spot | Citrus (sp. unknown)

DISEASE: Bacterial leaf spot

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

PATHOGEN: Xanthomonas alfalfae subsp. citrumelonis

PATHOGEN SYNONYM: Xanthomonas alfalfae subsp. citrumelo

SOURCE: J. H. Graham

DISEASE: Bacterial stripe

HOST: Bird-of-Paradise

Bird-of-paradise with brownish black stripes along leaf veins and decay at midrib.

Bacterial stripe | Bird-of-Paradise

DISEASE: Bacterial stripe

HOST: Bird-of-Paradise (Strelitzia reginae)

PATHOGEN: Burkholderia andropogonis

PATHOGEN SYNONYM: Pseudomonas andropogonis

SOURCE: T. Makino, M. Goto

DISEASE: Bacterial wilt

HOST: Bird-of-Paradise

Bird-of-paradise with wilted and dead leaves.

Bacterial wilt | Bird-of-Paradise

DISEASE: Bacterial wilt

HOST: Bird-of-Paradise (Strelitzia reginae)

PATHOGEN: Ralstonia solanacearum

PATHOGEN SYNONYM: Pseudomonas solanacearum

SOURCE: T. Saito, M. Goto

DISEASE: Bacterial wilt

HOST: Bird-of-Paradise

Bird-of-paradise (sliced section) with rotted stele in diseased rhizome. Note discolored vascular bundles of leaf petioles.

Bacterial wilt | Bird-of-Paradise

DISEASE: Bacterial wilt

HOST: Bird-of-Paradise (Strelitzia reginae)

PATHOGEN: Ralstonia solanacearum

PATHOGEN SYNONYM: Pseudomonas solanacearum

SOURCE: T. Saito, M. Goto

DISEASE: Blister spot

HOST: Apple

Fruit with water-soaked spots.

Blister spot | Apple

DISEASE: Blister spot

HOST: Apple (Malus domestica)

PATHOGEN: Pseudomonas syringae pv. papulans

SOURCE: T. Burr