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: Bacterial leaf blight and rot
HOST: Orchid
Leaves of Dendrobium orchid with necrosis, discoloration, and rot.
Bacterial leaf blight and rot | Orchid
DISEASE: Bacterial leaf blight and rot
HOST: Orchid (Dendrobium sp.)
PATHOGEN: Burkholderia gladioli pv. gladioli
PATHOGEN SYNONYM: Pseudomonas gladioli pv. gladioli
SOURCE: L. Keith
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