RESULTS

(6)

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DISEASE: Center rot

HOST: Onion

Early symptoms of disease are necrotic, bleached areas on young leaves that typically wilt.

Center rot | Onion

DISEASE: Center rot

HOST: Onion (Allium cepa)

PATHOGEN: Pantoea ananatis

SOURCE: R. Gitaitis

DISEASE: Center rot

HOST: Onion

Advanced stage of center rot. The bacterium has moved down from leaves into the bulb.

Center rot | Onion

DISEASE: Center rot

HOST: Onion (Allium cepa)

PATHOGEN: Pantoea ananatis

SOURCE: H. Schwartz

DISEASE: Center rot

HOST: Onion

Bulb with pale yellow, discolored decayed area.

Center rot | Onion

DISEASE: Center rot

HOST: Onion (Allium cepa)

PATHOGEN: Pantoea ananatis

SOURCE: H. Schwartz

DISEASE: Crown gall (Leafy gall)

HOST: Datura

Crown gall or leafy gall of datura.

Crown gall (Leafy gall) | Datura

DISEASE: Crown gall (Leafy gall)

HOST: Datura (Datura sp.)

PATHOGEN: Agrobacterium tumefaciens

PATHOGEN SYNONYM: Rhizobium sp.

SOURCE: M. Schroth

DISEASE: Yellow wilt

HOST: Beet

Symptoms of this disease are yellow leaves, wilting, and then collapse. There may be dwarfing of new leaves, yellowing of sectors, and chlorosis of veins.

Yellow wilt | Beet

DISEASE: Yellow wilt

HOST: Beet (Beta vulgaris)

PATHOGEN: 'Candidatus Phytoplasma' sp.

PATHOGEN SYNONYM: Phytoplasma (undefined)

SOURCE: F. Hills

DISEASE: Yellow wilt

HOST: Beet

Yellowing and dwarfing of sugar beet (left), an early stage of disease.

Yellow wilt | Beet

DISEASE: Yellow wilt

HOST: Beet (Beta vulgaris)

PATHOGEN: 'Candidatus Phytoplasma' sp.

PATHOGEN SYNONYM: Phytoplasma (undefined)

SOURCE: J. McFarlane