DISEASE: Bacterial leaf spot (Blight)
HOST: Begonia
Initial symptoms appear as small, blisterlike lesions. As lesions age, they enlarge, producing broad patches of necrotic leaf tissue.
Bacterial leaf spot (Blight) | Begonia
DISEASE: Bacterial leaf spot (Blight)
HOST: Begonia (Begonia sp.)
PATHOGEN: Xanthomonas axonopodis pv. begoniae
PATHOGEN SYNONYM: Xanthomonas campestris pv. begoniae
SOURCE: APS
DISEASE: Bacterial leaf spot (Blight)
HOST: Begonia
Advanced stage of disease with dark, large necrotic areas on leaves and interveinal chlorosis.
Bacterial leaf spot (Blight) | Begonia
DISEASE: Bacterial leaf spot (Blight)
HOST: Begonia (Begonia sp.)
PATHOGEN: Xanthomonas axonopodis pv. begoniae
PATHOGEN SYNONYM: Xanthomonas campestris pv. begoniae
SOURCE: APS
DISEASE: Blood disease
HOST: Banana
Yellow leaves of dying plant.
Blood disease | Banana
DISEASE: Blood disease
HOST: Banana (Musa sp.)
PATHOGEN: Ralstonia solanacearum species complex
PATHOGEN SYNONYM: Ralstonia solanacearum (Phylotype IV)
SOURCE: I. Buddenhagen
DISEASE: Blood disease
HOST: Banana
Cross sections of diseased fruit with reddish discoloration and bacterial ooze.
Blood disease | Banana
DISEASE: Blood disease
HOST: Banana (Musa sp.)
PATHOGEN: Ralstonia solanacearum species complex
PATHOGEN SYNONYM: Ralstonia solanacearum (Phylotype IV)
SOURCE: I. Buddenhagen
DISEASE: Blood disease
HOST: Banana
Longitudinal sections (right) exposing reddish brown discoloration of infected fruit.
Blood disease | Banana
DISEASE: Blood disease
HOST: Banana (Musa sp.)
PATHOGEN: Ralstonia solanacearum species complex
PATHOGEN SYNONYM: Ralstonia solanacearum (Phylotype IV)
SOURCE: I. Buddenhagen
DISEASE: Blood disease
HOST: Banana
Diseased plant with wilt and yellowing of leaves. The disease occurs in Indonesia and is characterized by bright red discoloration of vascular tissues. It is caused by strains in the Ralstonia solanacearum species complex.
Blood disease | Banana
DISEASE: Blood disease
HOST: Banana (Musa sp.)
PATHOGEN: Ralstonia solanacearum species complex
PATHOGEN SYNONYM: Ralstonia solanacearum (Phylotype IV)
SOURCE: I. Buddenhagen
DISEASE: Walnut blight
HOST: Walnut
Typical symptoms of infected leaf and young nutlets. Infected young, growing leaves usually become malformed.
Walnut blight | Walnut
DISEASE: Walnut blight
HOST: Walnut (Juglans regia 'Hartley')
PATHOGEN: Xanthomonas arboricola pv. juglandis
SOURCE: M. Schroth
DISEASE: Walnut blight
HOST: Walnut
Tree with severely blighted foliage.
Walnut blight | Walnut
DISEASE: Walnut blight
HOST: Walnut (Juglans regia 'Hartley')
PATHOGEN: Xanthomonas arboricola pv. juglandis
SOURCE: M. Schroth
DISEASE: Walnut blight
HOST: Walnut
Nuts with side blight. Infections also are commonly found at stylar ends.
Walnut blight | Walnut
DISEASE: Walnut blight
HOST: Walnut (Juglans regia 'Hartley')
PATHOGEN: Xanthomonas arboricola pv. juglandis
SOURCE: B. Teviotdale