DISEASE: Bacterial canker (Leaf spot)
HOST: Mume (Japanese apricot)
Leaves with spots surrounded by yellow halos.
Bacterial canker (Leaf spot) | Mume (Japanese apricot)
DISEASE: Bacterial canker (Leaf spot)
HOST: Mume (Japanese apricot) (Prunus mume)
PATHOGEN: Pseudomonas syringae pv. morsprunorum
SOURCE: M. Goto
DISEASE: European stone fruit yellows
HOST: Almond
The disease causes yellowing and rolling of leaves (right). Leaves become thick and rough in texture. Healthy leaves (left).
European stone fruit yellows | Almond
DISEASE: European stone fruit yellows
HOST: Almond (Prunus dulcis)
PATHOGEN: 'Candidatus Phytoplasma prunorum'
PATHOGEN SYNONYM: Phytoplasma Apple proliferation group
SOURCE: E. Seemueller
DISEASE: Greasy center
HOST: Poinsettia
Stem with dark cankers and copious ooze. Necrotic areas are greasy in appearance and eventually turn light tan to brown with a papery texture as the cuticle becomes detached.
Greasy center | Poinsettia
DISEASE: Greasy center
HOST: Poinsettia (Euphorbia pulcherrima)
PATHOGEN: Pseudomonas viridiflava
SOURCE: R. Raabe