RESULTS

(6)

FILTER

DISEASE: Bacterial fasciation (Leafy gall)

HOST: Petunia

Note hyperplasia and leafy galls.

Bacterial fasciation (Leafy gall) | Petunia

DISEASE: Bacterial fasciation (Leafy gall)

HOST: Petunia (Petunia sp.)

PATHOGEN: Rhodococcus fascians

SOURCE: M. Shurtleff

DISEASE: Bacterial fasciation (Leafy gall)

HOST: Petunia

Leaf proliferation at crown region.

Bacterial fasciation (Leafy gall) | Petunia

DISEASE: Bacterial fasciation (Leafy gall)

HOST: Petunia (Petunia hybrida)

PATHOGEN: Rhodococcus fascians

SOURCE: R. Raabe

DISEASE: Brittle root

HOST: Horseradish

Dying, stunted, yellow to brown horseradish plants.

Brittle root | Horseradish

DISEASE: Brittle root

HOST: Horseradish (Armoracia rusticana)

PATHOGEN: Spiroplasma citri

SOURCE: C. Eastman, M. Davis

DISEASE: Brittle root

HOST: Horseradish

Close-up of stunted, yellow horseradish plants.

Brittle root | Horseradish

DISEASE: Brittle root

HOST: Horseradish (Armoracia rusticana)

PATHOGEN: Spiroplasma citri

SOURCE: D. Sherrod

DISEASE: Brittle root

HOST: Horseradish

Horseradish with discolored internal tissues. Healthy root segment (top right).

Brittle root | Horseradish

DISEASE: Brittle root

HOST: Horseradish (Armoracia rusticana)

PATHOGEN: Spiroplasma citri

SOURCE: J. Fletcher, M. Davis

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