DISEASE: Bacterial blight
HOST: Hazelnut
Diseased young tree with discoloration of the cambium. Dieback of young twigs and branches is characteristic. Other typical symptoms are bud and twig necrosis and small, angular or round, water-soaked leaf spots.
Bacterial blight | Hazelnut
DISEASE: Bacterial blight
HOST: Hazelnut (Corylus americana)
PATHOGEN: Xanthomonas arboricola pv. corylina
SOURCE: J. Pscheidt
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 leaf scorch
HOST: Sycamore
Sycamore with scorched leaves and dieback of small branches.
Bacterial leaf scorch | Sycamore
DISEASE: Bacterial leaf scorch
HOST: Sycamore (Platanus occidentalis)
PATHOGEN: Xylella fastidiosa
SOURCE: W. Sinclair
DISEASE: Bacterial leaf scorch
HOST: Sycamore
Close-up of scorched leaves.
Bacterial leaf scorch | Sycamore
DISEASE: Bacterial leaf scorch
HOST: Sycamore (Platanus occidentalis)
PATHOGEN: Xylella fastidiosa
SOURCE: W. Sinclair
DISEASE: Xanthomonas wilt
HOST: Banana
Cross sections exposing discoloration of infected fruit.
Xanthomonas wilt | Banana
DISEASE: Xanthomonas wilt
HOST: Banana (Musa × paradisiaca 'Pisang Awak')
PATHOGEN: Xanthomonas campestris pv. musacearum
PATHOGEN SYNONYM: Xanthomonas campestris
SOURCE: I. Buddenhagen
DISEASE: Xanthomonas wilt
HOST: Banana
Sliced diseased stem exposing discolored vascular tissues and bacterial ooze.
Xanthomonas wilt | Banana
DISEASE: Xanthomonas wilt
HOST: Banana (Musa × paradisiaca 'Pisang Awak')
PATHOGEN: Xanthomonas campestris pv. musacearum
PATHOGEN SYNONYM: Xanthomonas campestris
SOURCE: I. Buddenhagen
DISEASE: Xanthomonas wilt
HOST: Banana
Longitudinal sections of fruit exposing brownish red diseased tissues.
Xanthomonas wilt | Banana
DISEASE: Xanthomonas wilt
HOST: Banana (Musa × paradisiaca 'Pisang Awak')
PATHOGEN: Xanthomonas campestris pv. musacearum
PATHOGEN SYNONYM: Xanthomonas campestris
SOURCE: I. Buddenhagen
DISEASE: Xanthomonas wilt
HOST: Banana
Banana stem with discoloration of vascular bundles and bacterial ooze.
Xanthomonas wilt | Banana
DISEASE: Xanthomonas wilt
HOST: Banana (Musa × paradisiaca 'Pisang Awak')
PATHOGEN: Xanthomonas campestris pv. musacearum
PATHOGEN SYNONYM: Xanthomonas campestris
SOURCE: I. Buddenhagen
DISEASE: Xanthomonas wilt
HOST: Banana
Banana with infected, blackened male flowers.
Xanthomonas wilt | Banana
DISEASE: Xanthomonas wilt
HOST: Banana (Musa × paradisiaca 'Pisang Awak')
PATHOGEN: Xanthomonas campestris pv. musacearum
PATHOGEN SYNONYM: Xanthomonas campestris
SOURCE: I. Buddenhagen