RESULTS

(15)

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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

DISEASE: Gypsophila gall

HOST: Gypsophila (Baby's breath)

Gall on gypsophila stem.

Gypsophila gall | Gypsophila (Baby's breath)

DISEASE: Gypsophila gall

HOST: Gypsophila (Baby's breath) (Gypsophila elegans)

PATHOGEN: Pantoea agglomerans pv. agglomerans

SOURCE: S. Manulis

DISEASE: Gypsophila gall

HOST: Gypsophila (Baby's breath)

Gall 1 month after inoculation of stem.

Gypsophila gall | Gypsophila (Baby's breath)

DISEASE: Gypsophila gall

HOST: Gypsophila (Baby's breath) (Gypsophila elegans)

PATHOGEN: Pantoea agglomerans pv. agglomerans

SOURCE: S. Manulis

DISEASE: Gypsophila gall

HOST: Gypsophila (Baby's breath)

Brown gall on crown of gypsophila.

Gypsophila gall | Gypsophila (Baby's breath)

DISEASE: Gypsophila gall

HOST: Gypsophila (Baby's breath) (Gypsophila elegans)

PATHOGEN: Pantoea agglomerans pv. agglomerans

SOURCE: S. Manulis

DISEASE: Gypsophila gall

HOST: Gypsophila (Baby's breath)

Galls (left) caused by Pantoea agglomerans pv. agglomerans tend to be brownish, and those (right) caused by P. agglomerans pv. betae are white.

Gypsophila gall | Gypsophila (Baby's breath)

DISEASE: Gypsophila gall

HOST: Gypsophila (Baby's breath) (Gypsophila elegans)

PATHOGEN: Pantoea agglomerans pv. agglomerans

SOURCE: S. Manulis

DISEASE: Lethal yellowing

HOST: Palm

Palm with dark necrotic inflorescence.

Lethal yellowing | Palm

DISEASE: Lethal yellowing

HOST: Palm (Cocos nucifera)

PATHOGEN: 'Candidatus Phytoplasma palmae'

PATHOGEN SYNONYM: Phytoplasma Coconut lethal yellowing group

SOURCE: N. A. Harrison

DISEASE: Lethal yellowing

HOST: Palm

Palm with close-up of diseased yellow spear leaf.

Lethal yellowing | Palm

DISEASE: Lethal yellowing

HOST: Palm (Cocos nucifera)

PATHOGEN: 'Candidatus Phytoplasma palmae'

PATHOGEN SYNONYM: Phytoplasma Coconut lethal yellowing group

SOURCE: W. Sinclair

DISEASE: Lethal yellowing

HOST: Palm

Progression of lethal yellowing symptoms. Older fronds of coconut palm turn yellow, followed by yellowing of younger ones near center of crown.

Lethal yellowing | Palm

DISEASE: Lethal yellowing

HOST: Palm (Cocos nucifera)

PATHOGEN: 'Candidatus Phytoplasma palmae'

PATHOGEN SYNONYM: Phytoplasma Coconut lethal yellowing group

SOURCE: W. Sinclair