RESULTS

(8)

FILTER

DISEASE: Bacterial leaf scorch

HOST: Pecan

Pecan with necrotic scorched leaves with distinct dark lines between healthy and diseased tissues.

Bacterial leaf scorch | Pecan

DISEASE: Bacterial leaf scorch

HOST: Pecan (Carya illinoinensis)

PATHOGEN: Xylella fastidiosa

SOURCE: T. Brenneman

DISEASE: Bunch disease

HOST: Pecan

Pecan exhibiting bunch symptoms at ends of branches. This disease is thought to be caused by a phytoplasma similar to the walnut bunch pathogen in the X-disease group.

Bunch disease | Pecan

DISEASE: Bunch disease

HOST: Pecan (Carya illinoinensis)

PATHOGEN: 'Candidatus Phytoplasma pruni'

PATHOGEN SYNONYM: Phytoplasma X-disease group

SOURCE: W. Sinclair

DISEASE: Bunch disease

HOST: Pecan

Severe case of bunch disease. Note bunches of foliage.

Bunch disease | Pecan

DISEASE: Bunch disease

HOST: Pecan (Carya illinoinensis)

PATHOGEN: 'Candidatus Phytoplasma pruni'

PATHOGEN SYNONYM: Phytoplasma X-disease group

SOURCE: P. Bertrand

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: Fire blight

HOST: Pluot

Fire blight cankers on major limb. Pluot is an interspecific hybrid of plum and apricot.

Fire blight | Pluot

DISEASE: Fire blight

HOST: Pluot (Prunus hybrid 'Dandy Dapple')

PATHOGEN: Erwinia amylovora

SOURCE: S. Mohan

DISEASE: Fire blight

HOST: Pluot

Dead shoot, the result of systemic infection.

Fire blight | Pluot

DISEASE: Fire blight

HOST: Pluot (Prunus hybrid 'Dandy Dapple')

PATHOGEN: Erwinia amylovora

SOURCE: S. Mohan

DISEASE: Fire blight

HOST: Pluot

Typical symptoms of fire blight-infected shoot.

Fire blight | Pluot

DISEASE: Fire blight

HOST: Pluot (Prunus hybrid 'Dandy Dapple')

PATHOGEN: Erwinia amylovora

SOURCE: S. Mohan

DISEASE: Witches'-broom

HOST: Pecan

Diseased pecan with short branches on trunk with witches'-broom appearance.

Witches'-broom | Pecan

DISEASE: Witches'-broom

HOST: Pecan (Carya illinoinensis)

PATHOGEN: 'Candidatus Phytoplasma pruni'

PATHOGEN SYNONYM: Phytoplasma X-disease group

SOURCE: P. Bertrand