RESULTS

(4)

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DISEASE: Aster yellows

HOST: Potato

Chlorotic and stunted foliage with necrotic leaf margins. Other symptoms may be phyllody, virescence, purple or yellow pigmentation, and rolling of leaflets.

Aster yellows | Potato

DISEASE: Aster yellows

HOST: Potato (Solanum tuberosum)

PATHOGEN: 'Candidatus Phytoplasma asteris'

PATHOGEN SYNONYM: Phytoplasma Aster yellows group

SOURCE: S. Thomson

DISEASE: Aster yellows

HOST: Potato

Stunted, chlorotic plants (left) with stiff, rolled leaves.

Aster yellows | Potato

DISEASE: Aster yellows

HOST: Potato (Solanum tuberosum)

PATHOGEN: 'Candidatus Phytoplasma asteris'

PATHOGEN SYNONYM: Phytoplasma Aster yellows group

SOURCE: S. Thomson

DISEASE: Aster yellows

HOST: Potato

Diseased plant with malformed tubers.

Aster yellows | Potato

DISEASE: Aster yellows

HOST: Potato (Solanum tuberosum)

PATHOGEN: 'Candidatus Phytoplasma asteris'

PATHOGEN SYNONYM: Phytoplasma Aster yellows group

SOURCE: S. Thomson

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