RESULTS

(4)

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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 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

DISEASE: European stone fruit yellows

HOST: Almond

The disease causes yellowing and rolling of leaves (right). Leaves become thick and rough in texture. Healthy leaves (left).

European stone fruit yellows | Almond

DISEASE: European stone fruit yellows

HOST: Almond (Prunus dulcis)

PATHOGEN: 'Candidatus Phytoplasma prunorum'

PATHOGEN SYNONYM: Phytoplasma Apple proliferation group

SOURCE: E. Seemueller