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 blight
HOST: Persimmon
Diseased shoots with spots on leaves and necroses on stems.
Bacterial blight | Persimmon
DISEASE: Bacterial blight
HOST: Persimmon (Diospyros sp.)
PATHOGEN: Pseudomonas syringae
SOURCE: J. Young
DISEASE: Bacterial canker (Leaf spot)
HOST: Mume (Japanese apricot)
Leaves with spots surrounded by yellow halos.
Bacterial canker (Leaf spot) | Mume (Japanese apricot)
DISEASE: Bacterial canker (Leaf spot)
HOST: Mume (Japanese apricot) (Prunus mume)
PATHOGEN: Pseudomonas syringae pv. morsprunorum
SOURCE: M. Goto
DISEASE: Bacterial canker
HOST: Cherry
Cherry with necrotic internal tissues and external symptoms of ooze (gummosis) caused by systemic infection.
Bacterial canker | Cherry
DISEASE: Bacterial canker
HOST: Cherry (Prunus avium)
PATHOGEN: Pseudomonas syringae pv. morsprunorum
SOURCE: D. Funk, A. Alvarez
DISEASE: Bacterial canker
HOST: Cherry
Systemic infection of petioles and leaves.
Bacterial canker | Cherry
DISEASE: Bacterial canker
HOST: Cherry (Prunus avium)
PATHOGEN: Pseudomonas syringae pv. morsprunorum
SOURCE: D. Funk, A. Alvarez
DISEASE: Bacterial wilt
HOST: Cantaloupe
Cantaloupe field with severe destruction from bacterial wilt (left), less on right.
Bacterial wilt | Cantaloupe
DISEASE: Bacterial wilt
HOST: Cantaloupe (Cucumis melo var. cantalupensis)
PATHOGEN: Erwinia tracheiphila
SOURCE: L. Claflin
DISEASE: Bacterial wilt
HOST: Muskmelon
Severely diseased plants as noted by dying runners.
Bacterial wilt | Muskmelon
DISEASE: Bacterial wilt
HOST: Muskmelon (Cucumis melo)
PATHOGEN: Erwinia tracheiphila
SOURCE: M. Shurtleff
DISEASE: Bacterial wilt
HOST: Muskmelon
Wilt-devastated muskmelon field.
Bacterial wilt | Muskmelon
DISEASE: Bacterial wilt
HOST: Muskmelon (Cucumis melo)
PATHOGEN: Erwinia tracheiphila
SOURCE: M. Shurtleff
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