RESULTS

(7)

FILTER

DISEASE: Aster yellows

HOST: Squash

Diagnostic characteristics for the disease are yellowing of young leaves, proliferation of secondary shoots, and rigid erect habit. Leaves are misshapen and smaller than normal and have stiff, thick laminae.

Aster yellows | Squash

DISEASE: Aster yellows

HOST: Squash (Cucurbita sp.)

PATHOGEN: 'Candidatus Phytoplasma asteris'

PATHOGEN SYNONYM: Phytoplasma Aster yellows group

SOURCE: S. Miller

DISEASE: Bacterial blight

HOST: Raspberry

Systemically invaded stem and dead leaf.

Bacterial blight | Raspberry

DISEASE: Bacterial blight

HOST: Raspberry (Rubus sp.)

PATHOGEN: Pseudomonas syringae pv. syringae

SOURCE: R. Byther, M. Shurtleff

DISEASE: Crown gall

HOST: Blackberry

Crown gall of blackberry.

Crown gall | Blackberry

DISEASE: Crown gall

HOST: Blackberry (Rubus sp.)

PATHOGEN: Agrobacterium tumefaciens

PATHOGEN SYNONYM: Rhizobium sp.

SOURCE: J. Young, D. Watson

DISEASE: Fire blight

HOST: Raspberry

Leaflet systemically invaded by fire blight bacteria.

Fire blight | Raspberry

DISEASE: Fire blight

HOST: Raspberry (Rubus sp.)

PATHOGEN: Erwinia amylovora

SOURCE: S. Jeffers

DISEASE: Olive knot

HOST: Olive

Multiple infections of young stems. The bacterium invades vascular tissues during certain times of the year and may be isolated from branches that appear healthy.

Olive knot | Olive

DISEASE: Olive knot

HOST: Olive (Olea europaea)

PATHOGEN: Pseudomonas savastanoi pv. savastanoi

SOURCE: M. Schroth

DISEASE: Olive knot

HOST: Olive

Tree with knots/galls on branches along with twig dieback, which is associated with knots. Fusarium and Diplodia spp. infect through knots and are thought to be main reason for dieback.

Olive knot | Olive

DISEASE: Olive knot

HOST: Olive (Olea europaea)

PATHOGEN: Pseudomonas savastanoi pv. savastanoi

SOURCE: M. Schroth

DISEASE: Olive knot

HOST: Olive

Multiple infections on olive branch. Knots at this stage begin to die from the outside in and are infected by several fungi.

Olive knot | Olive

DISEASE: Olive knot

HOST: Olive (Olea europaea)

PATHOGEN: Pseudomonas savastanoi pv. savastanoi

SOURCE: M. Schroth