RESULTS

(7)

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DISEASE: Bacterial blight (Bacterial necrosis)

HOST: Grape

Stem necrosis of grape.

Bacterial blight (Bacterial necrosis) | Grape

DISEASE: Bacterial blight (Bacterial necrosis)

HOST: Grape (Vitis vinifera)

PATHOGEN: Xylophilus ampelinus

PATHOGEN SYNONYM: Xanthomonas ampelina

SOURCE: N. Schaad

DISEASE: Bacterial blight (Bacterial necrosis)

HOST: Grape

Stem with cankers and discolored external tissues.

Bacterial blight (Bacterial necrosis) | Grape

DISEASE: Bacterial blight (Bacterial necrosis)

HOST: Grape (Vitis vinifera)

PATHOGEN: Xylophilus ampelinus

PATHOGEN SYNONYM: Xanthomonas ampelina

SOURCE: N. Schaad

DISEASE: Bacterial blight (Bacterial necrosis)

HOST: Grape

Severe infection in vineyard is noted by dead canes. Symptoms are most severe in spring; shoot blight, occasional spots on leaves, and cankers are common.

Bacterial blight (Bacterial necrosis) | Grape

DISEASE: Bacterial blight (Bacterial necrosis)

HOST: Grape (Vitis vinifera)

PATHOGEN: Xylophilus ampelinus

PATHOGEN SYNONYM: Xanthomonas ampelina

SOURCE: C. Manceau, N. Schaad

DISEASE: Bacterial blight (Bacterial necrosis)

HOST: Grape

Leaf with necrotic spots and marginal necrosis. One-sided cracking of petiole tissue is common (not shown here).

Bacterial blight (Bacterial necrosis) | Grape

DISEASE: Bacterial blight (Bacterial necrosis)

HOST: Grape (Vitis vinifera)

PATHOGEN: Xylophilus ampelinus

PATHOGEN SYNONYM: Xanthomonas ampelina

SOURCE: C. Panagopoulos

DISEASE: Bacterial canker (Leaf spot)

HOST: Mume (Japanese apricot)

Leaves with spots surrounded by yellow halos.

Bacterial canker (Leaf spot) | Mume (Japanese apricot)

DISEASE: Bacterial canker (Leaf spot)

HOST: Mume (Japanese apricot) (Prunus mume)

PATHOGEN: Pseudomonas syringae pv. morsprunorum

SOURCE: M. Goto

DISEASE: Dodonaea yellows

HOST: Florida hopbush

Hopbush with brownish red witches'-broom.

Dodonaea yellows | Florida hopbush

DISEASE: Dodonaea yellows

HOST: Florida hopbush (Dodonaea viscosa)

PATHOGEN: 'Candidatus Phytoplasma pruni'

PATHOGEN SYNONYM: Phytoplasma X-disease group

SOURCE: W. Borth

DISEASE: Dodonaea yellows

HOST: Florida hopbush

Advanced stage of dodonaea yellows and witches'-broom.

Dodonaea yellows | Florida hopbush

DISEASE: Dodonaea yellows

HOST: Florida hopbush (Dodonaea viscosa)

PATHOGEN: 'Candidatus Phytoplasma pruni'

PATHOGEN SYNONYM: Phytoplasma X-disease group

SOURCE: W. Borth