RESULTS

(5)

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DISEASE: Bacterial leaf spot

HOST: Schefflera

Leaf with many small, pinpoint-sized lesions and a few large lesions.

Bacterial leaf spot | Schefflera

DISEASE: Bacterial leaf spot

HOST: Schefflera (Schefflera arboricola)

PATHOGEN: Xanthomonas hortorum pv. hederae

PATHOGEN SYNONYM: Xanthomonas campestris pv. hederae

SOURCE: A. Chase

DISEASE: Bacterial soft rot

HOST: Wasabi (Japanese horseradish)

Longitudinal sections of diseased rhizomes with discolored vascular tissues.

Bacterial soft rot | Wasabi (Japanese horseradish)

DISEASE: Bacterial soft rot

HOST: Wasabi (Japanese horseradish) (Wasabia japonica)

PATHOGEN: Pectobacterium wasabiae

PATHOGEN SYNONYM: Erwinia carotovora subsp. wasabiae

SOURCE: M. Goto

DISEASE: Bacterial soft rot

HOST: Wasabi (Japanese horseradish)

Longitudinal section of rhizome with discolored vascular bundles (left), and rhizome with external symptoms (right).

Bacterial soft rot | Wasabi (Japanese horseradish)

DISEASE: Bacterial soft rot

HOST: Wasabi (Japanese horseradish) (Wasabia japonica)

PATHOGEN: Pectobacterium wasabiae

PATHOGEN SYNONYM: Erwinia carotovora subsp. wasabiae

SOURCE: M. Goto

DISEASE: Bacterial soft rot

HOST: Wasabi (Japanese horseradish)

Cross section of rhizome with dark, infected vascular bundles.

Bacterial soft rot | Wasabi (Japanese horseradish)

DISEASE: Bacterial soft rot

HOST: Wasabi (Japanese horseradish) (Wasabia japonica)

PATHOGEN: Pectobacterium wasabiae

PATHOGEN SYNONYM: Erwinia carotovora subsp. wasabiae

SOURCE: G. Rodriguez

DISEASE: Pseudomonas leaf spot

HOST: Primrose

Leaf with brownish red spots and reddening of adjacent areas. Disease begins as small, water-soaked lesions that later coalesce into large necrotic spots.

Pseudomonas leaf spot | Primrose

DISEASE: Pseudomonas leaf spot

HOST: Primrose (Primula sp.)

PATHOGEN: Pseudomonas syringae pv. primulae

SOURCE: APS