RESULTS

(8)

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DISEASE: Bacterial wilt

HOST: Bean

Bean leaf with white pustules following inoculation. Stem inoculation causes veinal yellowing and necrosis of leaves. Infected seed may be purple or yellow.

Bacterial wilt | Bean

DISEASE: Bacterial wilt

HOST: Bean (Phaseolus vulgaris)

PATHOGEN: Curtobacterium flaccumfaciens pv. flaccumfaciens

SOURCE: L. Claflin

DISEASE: Bacterial wilt

HOST: Bean

Leaves with interveinal chlorosis and necrosis. Healthy (right).

Bacterial wilt | Bean

DISEASE: Bacterial wilt

HOST: Bean (Phaseolus vulgaris)

PATHOGEN: Curtobacterium flaccumfaciens pv. flaccumfaciens

SOURCE: APS

DISEASE: Bacterial wilt

HOST: Bean

Bean seeds infected with orange (upper right), violet (upper left), and yellow (lower left) variants of Curtobacterium flaccumfaciens. White seed in the lower right is healthy.

Bacterial wilt | Bean

DISEASE: Bacterial wilt

HOST: Bean (Phaseolus vulgaris)

PATHOGEN: Curtobacterium flaccumfaciens pv. flaccumfaciens

SOURCE: APS

DISEASE: Bacterial wilt

HOST: Bean

Common bean with brownish purple discoloration of hypocotyl caused by infection from infested seed.

Bacterial wilt | Bean

DISEASE: Bacterial wilt

HOST: Bean (Phaseolus vulgaris)

PATHOGEN: Curtobacterium flaccumfaciens pv. flaccumfaciens

SOURCE: APS

DISEASE: Bacterial wilt

HOST: Bean

Dry bean with discoloration between veins and veinlets.

Bacterial wilt | Bean

DISEASE: Bacterial wilt

HOST: Bean (Phaseolus vulgaris)

PATHOGEN: Curtobacterium flaccumfaciens pv. flaccumfaciens

SOURCE: H. Schwartz

DISEASE: Bacterial wilt

HOST: Bean

Bean with severe symptoms of foliar wilt and necrosis.

Bacterial wilt | Bean

DISEASE: Bacterial wilt

HOST: Bean (Phaseolus vulgaris)

PATHOGEN: Curtobacterium flaccumfaciens pv. flaccumfaciens

SOURCE: H. Schwartz

DISEASE: Bacterial wilt

HOST: Bean

Dry bean with water-soaked and necrotic lesions on stem.

Bacterial wilt | Bean

DISEASE: Bacterial wilt

HOST: Bean (Phaseolus vulgaris)

PATHOGEN: Curtobacterium flaccumfaciens pv. flaccumfaciens

SOURCE: H. Schwartz

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