RESULTS

(6)

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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 pustule

HOST: Soybean

Early symptoms are minute, pale green spots on young leaves. Later, small pustules form in the center of spots, best observed on underside of leaves. Spots vary in size and darken with age and lesions coalesce. Dead areas are torn away by wind.

Bacterial pustule | Soybean

DISEASE: Bacterial pustule

HOST: Soybean (Glycine max)

PATHOGEN: Xanthomonas axonopodis pv. glycines

PATHOGEN SYNONYM: Xanthomonas campestris pv. glycines

SOURCE: APS

DISEASE: Bunch disease (Witches'-broom)

HOST: Butternut

Bunch disease of butternut.

Bunch disease (Witches'-broom) | Butternut

DISEASE: Bunch disease (Witches'-broom)

HOST: Butternut (Juglans cinerea)

PATHOGEN: 'Candidatus Phytoplasma pruni'

PATHOGEN SYNONYM: Phytoplasma X-disease group

SOURCE: W. Sinclair