RESULTS

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DISEASE: Bacterial blight

HOST: Tulip

The disease causes white veins of leaves, yellow vascular bundles, and yellow bacterial slime on bulbs.

Bacterial blight | Tulip

DISEASE: Bacterial blight

HOST: Tulip (Tulipa sp. 'Paul Richter')

PATHOGEN: Curtobacterium flaccumfaciens pv. oortii

PATHOGEN SYNONYM: Corynebacterium flaccumfaciens subsp. oortii

SOURCE: M. Geesteranus, J. van der Wolf

DISEASE: Bacterial blight

HOST: Tulip

Stunted plants with wrinkled leaves.

Bacterial blight | Tulip

DISEASE: Bacterial blight

HOST: Tulip (Tulipa sp. 'Paul Richter')

PATHOGEN: Curtobacterium flaccumfaciens pv. oortii

PATHOGEN SYNONYM: Corynebacterium flaccumfaciens subsp. oortii

SOURCE: M. Geesteranus, J. van der Wolf

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

DISEASE: Phytoplasma disease

HOST: Armeria

Phytoplasma-infected armeria (left and right) compared with healthy plant (center).

Phytoplasma disease | Armeria

DISEASE: Phytoplasma disease

HOST: Armeria (Armeria maritima)

PATHOGEN: 'Candidatus Phytoplasma' sp.

PATHOGEN SYNONYM: Phytoplasma (undefined)

SOURCE: R. Raabe