RESULTS

(5)

FILTER

DISEASE: Aster yellows

HOST: Squash

Diagnostic characteristics for the disease are yellowing of young leaves, proliferation of secondary shoots, and rigid erect habit. Leaves are misshapen and smaller than normal and have stiff, thick laminae.

Aster yellows | Squash

DISEASE: Aster yellows

HOST: Squash (Cucurbita sp.)

PATHOGEN: 'Candidatus Phytoplasma asteris'

PATHOGEN SYNONYM: Phytoplasma Aster yellows group

SOURCE: S. Miller

DISEASE: Dogwood stunt

HOST: Dogwood

Diseased plant with small leaves (left).

Dogwood stunt | Dogwood

DISEASE: Dogwood stunt

HOST: Dogwood (Cornus sp.)

PATHOGEN: 'Candidatus Phytoplasma asteris'

PATHOGEN SYNONYM: Phytoplasma Aster yellows group

SOURCE: W. Sinclair

DISEASE: Foamy canker

HOST: Koa

Foamy canker of koa is associated with bacteria and yeast. The causal agent has not been identified.

Foamy canker | Koa

DISEASE: Foamy canker

HOST: Koa (Acacia koa)

PATHOGEN: Causal agent unknown

SOURCE: H. Keyser

DISEASE: Foamy canker

HOST: Koa

Dieback of koa tree. The causal agent has not been identified.

Foamy canker | Koa

DISEASE: Foamy canker

HOST: Koa (Acacia koa)

PATHOGEN: Causal agent unknown

SOURCE: H. Keyser

DISEASE: Witches'-broom

HOST: Dogwood

Witches'-broom of eastern dogwood.

Witches'-broom | Dogwood

DISEASE: Witches'-broom

HOST: Dogwood (Cornus sp.)

PATHOGEN: 'Candidatus Phytoplasma' sp.

PATHOGEN SYNONYM: Phytoplasma (undefined)

SOURCE: W. Sinclair