RESULTS

(8)

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DISEASE: Bacterial dieback of nectarine

HOST: Nectarine

Dark cankers on last year's twig. Symptoms of bacterial dieback of nectarine are identical to those of bacterial dieback of peach.

Bacterial dieback of nectarine | Nectarine

DISEASE: Bacterial dieback of nectarine

HOST: Nectarine (Prunus persica var. nucipersica)

PATHOGEN: Pseudomonas syringae pv. persicae

SOURCE: J. Young

DISEASE: Bacterial dieback of nectarine

HOST: Nectarine

Diseased young twigs.

Bacterial dieback of nectarine | Nectarine

DISEASE: Bacterial dieback of nectarine

HOST: Nectarine (Prunus persica var. nucipersica)

PATHOGEN: Pseudomonas syringae pv. persicae

SOURCE: J. Young

DISEASE: Bacterial dieback of nectarine

HOST: Nectarine

Bacterial invasion of trunk caused reddish brown discolored area. Symptoms of bacterial dieback of nectarine are identical to those of bacterial dieback of peach.

Bacterial dieback of nectarine | Nectarine

DISEASE: Bacterial dieback of nectarine

HOST: Nectarine (Prunus persica var. nucipersica)

PATHOGEN: Pseudomonas syringae pv. persicae

SOURCE: J. Young

DISEASE: Bacterial dieback of nectarine

HOST: Nectarine

Discolored vascular tissues and gummosis on infected twig.

Bacterial dieback of nectarine | Nectarine

DISEASE: Bacterial dieback of nectarine

HOST: Nectarine (Prunus persica var. nucipersica)

PATHOGEN: Pseudomonas syringae pv. persicae

SOURCE: J. Young

DISEASE: Bacterial dieback of nectarine

HOST: Nectarine

Symptoms of the disease include leaf spots (top leaf). Similar appearing leaf spots may be caused by Xanthomonas arboricola pv. pruni (bottom leaf).

Bacterial dieback of nectarine | Nectarine

DISEASE: Bacterial dieback of nectarine

HOST: Nectarine (Prunus persica var. nucipersica)

PATHOGEN: Pseudomonas syringae pv. persicae

SOURCE: J. Young

DISEASE: Bacterial dieback of nectarine

HOST: Nectarine

Dying tree caused by systemic invasion of the bacterium. Symptoms of bacterial dieback of nectarine are identical to those of bacterial dieback of peach.

Bacterial dieback of nectarine | Nectarine

DISEASE: Bacterial dieback of nectarine

HOST: Nectarine (Prunus persica var. nucipersica)

PATHOGEN: Pseudomonas syringae pv. persicae

SOURCE: J. Young

DISEASE: Witches'-broom

HOST: Lilac

Lilac with broomlike symptoms and dead twigs.

Witches'-broom | Lilac

DISEASE: Witches'-broom

HOST: Lilac (Syringa josiflexa 'Royalty')

PATHOGEN: 'Candidatus Phytoplasma fraxini'

PATHOGEN SYNONYM: Phytoplasma Ash yellows group

SOURCE: C. Hibben, W. Sinclair

DISEASE: Witches'-broom

HOST: Pigeon pea

Pigeon pea with witches'-broom.

Witches'-broom | Pigeon pea

DISEASE: Witches'-broom

HOST: Pigeon pea (Cajanus cajan)

PATHOGEN: 'Candidatus Phytoplasma aurantifolia'

PATHOGEN SYNONYM: Phytoplasma Peanut witches'-broom group

SOURCE: R. McCoy, M. Davis