RESULTS

(4)

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DISEASE: Bacterial blight

HOST: Tulip

The disease causes white veins of leaves, yellow vascular bundles, and yellow bacterial slime on bulbs.

Bacterial blight | Tulip

DISEASE: Bacterial blight

HOST: Tulip (Tulipa sp. 'Paul Richter')

PATHOGEN: Curtobacterium flaccumfaciens pv. oortii

PATHOGEN SYNONYM: Corynebacterium flaccumfaciens subsp. oortii

SOURCE: M. Geesteranus, J. van der Wolf

DISEASE: Bacterial blight

HOST: Tulip

Stunted plants with wrinkled leaves.

Bacterial blight | Tulip

DISEASE: Bacterial blight

HOST: Tulip (Tulipa sp. 'Paul Richter')

PATHOGEN: Curtobacterium flaccumfaciens pv. oortii

PATHOGEN SYNONYM: Corynebacterium flaccumfaciens subsp. oortii

SOURCE: M. Geesteranus, J. van der Wolf

DISEASE: Citrus greening (Huanglongbing)

HOST: Citrus (Mandarin orange)

The bacterium invades the tree slowly, leading to yellowing of the entire canopy. Pale yellow, blotchy mottled leaves are reduced in size.

Citrus greening (Huanglongbing) | Citrus (Mandarin orange)

DISEASE: Citrus greening (Huanglongbing)

HOST: Citrus (Mandarin orange) (Citrus reticulata)

PATHOGEN: 'Candidatus Liberibacter asiaticus'

PATHOGEN SYNONYM: Candidatus Liberobacter asiaticus

SOURCE: S. M. Garnsey

DISEASE: X-disease (Western X) or buckskin

HOST: Cherry

X-disease causes undersized, yellowish fruit. Diseased branches turn rusty red near end of season. Some defoliation occurs on diseased branches.

X-disease (Western X) or buckskin | Cherry

DISEASE: X-disease (Western X) or buckskin

HOST: Cherry (Prunus cerasus)

PATHOGEN: 'Candidatus Phytoplasma pruni'

PATHOGEN SYNONYM: Phytoplasma X-disease group

SOURCE: A. Jones