RESULTS

(13)

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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: Elm yellows

HOST: Elm

Symptoms of elm yellows occasionally appear on one branch before others, but more often they involve the entire crown.

Elm yellows | Elm

DISEASE: Elm yellows

HOST: Elm (Ulmus americana)

PATHOGEN: 'Candidatus Phytoplasma ulmi'

PATHOGEN SYNONYM: Phytoplasma Elm yellows group

SOURCE: W. Sinclair

DISEASE: Elm yellows

HOST: Elm

Diseased twig (right) with epinasty, chlorosis, and yellowing of leaves. Sometimes both yellow and green leaves occur on same branch. Healthy branch (left).

Elm yellows | Elm

DISEASE: Elm yellows

HOST: Elm (Ulmus americana)

PATHOGEN: 'Candidatus Phytoplasma ulmi'

PATHOGEN SYNONYM: Phytoplasma Elm yellows group

SOURCE: W. Sinclair