RESULTS

(5)

FILTER

DISEASE: Bacterial blight

HOST: Parsnip

Parsnip with severe blight symptoms. There also is browning of the vascular system. Rot may progress from the crown into roots.

Bacterial blight | Parsnip

DISEASE: Bacterial blight

HOST: Parsnip (Pastinaca sativa)

PATHOGEN: Pseudomonas viridiflava

SOURCE: J. Hunter

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: Elm yellows

HOST: Elm

Elm yellows is characterized by witches'-brooms and stunting. Some cultivars have both yellow and reddish foliar discoloration.

Elm yellows | Elm

DISEASE: Elm yellows

HOST: Elm (Ulmus parvifolia)

PATHOGEN: 'Candidatus Phytoplasma ulmi'

PATHOGEN SYNONYM: Phytoplasma Elm yellows group

SOURCE: W. Sinclair