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

HOST: Hazelnut

Primary symptoms are failure of buds to break and withering and death of new foliage in spring. Dead leaves remain attached to limbs after normal leaf fall.

Bacterial canker | Hazelnut

DISEASE: Bacterial canker

HOST: Hazelnut (Corylus americana)

PATHOGEN: Pseudomonas syringae pv. avellanae

PATHOGEN SYNONYM: Pseudomonas avellanae

SOURCE: P. Psalidas

DISEASE: Bacterial gall

HOST: Wisteria (Japanese wisteria)

Multiple galls on trunk.

Bacterial gall | Wisteria (Japanese wisteria)

DISEASE: Bacterial gall

HOST: Wisteria (Japanese wisteria) (Wisteria floribunda)

PATHOGEN: Pantoea agglomerans pv. millettiae

PATHOGEN SYNONYM: Erwinia herbicola pv. millettiae

SOURCE: M. Goto

DISEASE: Bacterial gall

HOST: Wisteria (Japanese wisteria)

Gall on branch.

Bacterial gall | Wisteria (Japanese wisteria)

DISEASE: Bacterial gall

HOST: Wisteria (Japanese wisteria) (Wisteria floribunda)

PATHOGEN: Pantoea agglomerans pv. millettiae

PATHOGEN SYNONYM: Erwinia herbicola pv. millettiae

SOURCE: M. Goto