RESULTS

(15)

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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: Bacterial fasciation (Leafy gall)

HOST: Tobacco

Bacterial fasciation of tobacco.

Bacterial fasciation (Leafy gall) | Tobacco

DISEASE: Bacterial fasciation (Leafy gall)

HOST: Tobacco (Nicotiana tabacum)

PATHOGEN: Rhodococcus fascians

SOURCE: R. Raabe

DISEASE: Bacterial fasciation (Leafy gall)

HOST: Viola (Horned violet)

The disease causes distortion and overgrowth of axillary buds.

Bacterial fasciation (Leafy gall) | Viola (Horned violet)

DISEASE: Bacterial fasciation (Leafy gall)

HOST: Viola (Horned violet) (Viola cornuta)

PATHOGEN: Rhodococcus fascians

SOURCE: M. Putnam

DISEASE: Carrot yellows

HOST: Carrot

Flowers with shoot proliferation (witches’-broom) (left). Healthy flower (right). Virescence and phyllody of flower parts are common.

Carrot yellows | Carrot

DISEASE: Carrot yellows

HOST: Carrot (Daucus carota)

PATHOGEN: 'Candidatus Phytoplasma asteris'

PATHOGEN SYNONYM: Phytoplasma Aster yellows group

SOURCE: M. Schroth

DISEASE: Carrot yellows

HOST: Carrot

Carrot with proliferation of roots. Initial symptoms include yellowing and narrowing of veins of young leaves. The entire leaf later becomes necrotic.

Carrot yellows | Carrot

DISEASE: Carrot yellows

HOST: Carrot (Daucus carota)

PATHOGEN: 'Candidatus Phytoplasma asteris'

PATHOGEN SYNONYM: Phytoplasma Aster yellows group

SOURCE: G. S. Abawi