RESULTS

(8)

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DISEASE: Bacterial flower stalk and leaf necrosis

HOST: Onion

Dark, rotted areas of stalk and leaves caused by systemic invasion of the pathogen.

Bacterial flower stalk and leaf necrosis | Onion

DISEASE: Bacterial flower stalk and leaf necrosis

HOST: Onion (Allium cepa)

PATHOGEN: Pseudomonas marginalis pv. marginalis

SOURCE: S. Mohan

DISEASE: Bacterial flower stalk and leaf necrosis

HOST: Onion

Gray-brown rot of onion after inoculation. Disease starts as small, water-soaked lesions that later develop into slimy, gray-brown rot. The disease progresses downward from the stalk and may rot the entire bulb.

Bacterial flower stalk and leaf necrosis | Onion

DISEASE: Bacterial flower stalk and leaf necrosis

HOST: Onion (Allium cepa)

PATHOGEN: Pseudomonas marginalis pv. marginalis

SOURCE: R. Gitaitis

DISEASE: Bacterial flower stalk and leaf necrosis

HOST: Onion

Leaves with necrosis and rot. The common name for this disease is the same as those used for two other diseases. Also, another common name for this disease is bacterial soft rot.

Bacterial flower stalk and leaf necrosis | Onion

DISEASE: Bacterial flower stalk and leaf necrosis

HOST: Onion (Allium cepa)

PATHOGEN: Pseudomonas marginalis pv. marginalis

SOURCE: S. Mohan

DISEASE: Bacterial vascular necrosis and rot

HOST: Beet

Cross section of sugar beet with reddish color in vascular bundles and adjacent tissues.

Bacterial vascular necrosis and rot | Beet

DISEASE: Bacterial vascular necrosis and rot

HOST: Beet (Beta vulgaris)

PATHOGEN: Pectobacterium betavasculorum

PATHOGEN SYNONYM: Erwinia carotovora subsp. betavasculorum

SOURCE: M. Schroth

DISEASE: Bacterial vascular necrosis and rot

HOST: Beet

Advanced stage of disease with extensive rot.

Bacterial vascular necrosis and rot | Beet

DISEASE: Bacterial vascular necrosis and rot

HOST: Beet (Beta vulgaris)

PATHOGEN: Pectobacterium betavasculorum

PATHOGEN SYNONYM: Erwinia carotovora subsp. betavasculorum

SOURCE: M. Schroth

DISEASE: Bacterial vascular necrosis and rot

HOST: Beet

Early stage of systemic infection of young plant noted by blackening of midribs and veins.

Bacterial vascular necrosis and rot | Beet

DISEASE: Bacterial vascular necrosis and rot

HOST: Beet (Beta vulgaris)

PATHOGEN: Pectobacterium betavasculorum

PATHOGEN SYNONYM: Erwinia carotovora subsp. betavasculorum

SOURCE: M. Schroth

DISEASE: Bacterial vascular necrosis and rot

HOST: Beet

Infected vascular bundles caused by systemic infection by the bacterium.

Bacterial vascular necrosis and rot | Beet

DISEASE: Bacterial vascular necrosis and rot

HOST: Beet (Beta vulgaris)

PATHOGEN: Pectobacterium betavasculorum

PATHOGEN SYNONYM: Erwinia carotovora subsp. betavasculorum

SOURCE: S. Thomson

DISEASE: Bacterial vascular necrosis and rot

HOST: Beet

Black discoloration of petioles resulting from systemic infection.

Bacterial vascular necrosis and rot | Beet

DISEASE: Bacterial vascular necrosis and rot

HOST: Beet (Beta vulgaris)

PATHOGEN: Pectobacterium betavasculorum

PATHOGEN SYNONYM: Erwinia carotovora subsp. betavasculorum

SOURCE: S. Thomson