RESULTS

(5)

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DISEASE: Aster yellows

HOST: Kalanchoe

Kalanchoe with malformed inflorescences.

Aster yellows | Kalanchoe

DISEASE: Aster yellows

HOST: Kalanchoe (Kalanchoe sp.)

PATHOGEN: 'Candidatus Phytoplasma asteris'

PATHOGEN SYNONYM: Phytoplasma Aster yellows group

SOURCE: R. Raabe

DISEASE: Bacterial dieback of nectarine

HOST: Nectarine

Discolored tissues of crown and roots were caused by systemic invasion of the pathogen.

Bacterial dieback of nectarine | Nectarine

DISEASE: Bacterial dieback of nectarine

HOST: Nectarine (Prunus persica 'Fantasia')

PATHOGEN: Pseudomonas syringae pv. persicae

SOURCE: J. Young

DISEASE: Bacterial wilt

HOST: Grass

Initial symptom is a lime-green, yellow, or blue-green appearance of the grass. The next symptom is small, reddish brown spots on leaf blades.

Bacterial wilt | Grass

DISEASE: Bacterial wilt

HOST: Grass (Poa annua)

PATHOGEN: Xanthomonas translucens pv. poae

SOURCE: P. H. Dernoeden

DISEASE: Bacterial wilt

HOST: Grass

Infected turf grass with patches of yellowing, wilted, and dead grass.

Bacterial wilt | Grass

DISEASE: Bacterial wilt

HOST: Grass (Poa annua)

PATHOGEN: Xanthomonas translucens pv. poae

SOURCE: APS

DISEASE: Bacterial wilt

HOST: Grass

Late stage of disease development. Dead grass has a light brown or bleached tan appearance.

Bacterial wilt | Grass

DISEASE: Bacterial wilt

HOST: Grass (Poa annua)

PATHOGEN: Xanthomonas translucens pv. poae

SOURCE: P. H. Dernoeden