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DISEASE: Bacterial blast and fruit spot

HOST: Avocado

White bacterial ooze on surface of fruit. Pseudomonas strains that cause canker likely differ from those that infect fruit and leaves.

Bacterial blast and fruit spot | Avocado

DISEASE: Bacterial blast and fruit spot

HOST: Avocado (Persea americana)

PATHOGEN: Pseudomonas syringae

SOURCE: L. Fucikovsky

DISEASE: Bacterial canker

HOST: Avocado

Cankers on trunk.

Bacterial canker | Avocado

DISEASE: Bacterial canker

HOST: Avocado (Persea americana)

PATHOGEN: Xanthomonas campestris

SOURCE: H. Ohr

DISEASE: Bacterial dieback of nectarine

HOST: Nectarine

Discolored tissues of crown and roots were caused by systemic invasion of the pathogen.

Bacterial dieback of nectarine | Nectarine

DISEASE: Bacterial dieback of nectarine

HOST: Nectarine (Prunus persica 'Fantasia')

PATHOGEN: Pseudomonas syringae pv. persicae

SOURCE: J. Young

DISEASE: Bacterial wilt

HOST: Squash

Field with severe symptoms of wilt. Foliage often is chlorotic and leaf margins may be chlorotic and necrotic before plant death. Bacterial ooze may be seen streaming from the xylem when infected stems are cut.

Bacterial wilt | Squash

DISEASE: Bacterial wilt

HOST: Squash (Cucurbita maxima)

PATHOGEN: Erwinia tracheiphila

SOURCE: B. Jacobsen, M. Shurtleff