DISEASE: Bacterial leaf spot
HOST: Pothos
Leaf with black necrotic tissues with concentric rings of light and dark tissues.
Bacterial leaf spot | Pothos
DISEASE: Bacterial leaf spot
HOST: Pothos (Epipremnum pinnatum)
PATHOGEN: Pseudomonas cichorii
SOURCE: APS
DISEASE: Bacterial scab
HOST: Gladiolus
Gladiolus bulb with brownish to dark brown, sunken scabs.
Bacterial scab | Gladiolus
DISEASE: Bacterial scab
HOST: Gladiolus (Gladiolus sp.)
PATHOGEN: Burkholderia gladioli pv. gladioli
PATHOGEN SYNONYM: Pseudomonas gladioli pv. gladioli
SOURCE: Plant Protection Service of the Netherlands
DISEASE: Bacterial wilt and dieback
HOST: Willow
Cross sections of the characteristic "watermark stain" of diseased wood. Wilt and dieback occur as disease progresses.
Bacterial wilt and dieback | Willow
DISEASE: Bacterial wilt and dieback
HOST: Willow (Salix sp.)
PATHOGEN: Brenneria salicis
PATHOGEN SYNONYM: Erwinia salicis
SOURCE: Y. Sakamoto, M. Goto
DISEASE: Bacterial wilt and dieback
HOST: Willow
Severely diseased tree with dieback symptoms.
Bacterial wilt and dieback | Willow
DISEASE: Bacterial wilt and dieback
HOST: Willow (Salix sp.)
PATHOGEN: Brenneria salicis
PATHOGEN SYNONYM: Erwinia salicis
SOURCE: Y. Sakamoto, M. Goto
DISEASE: Slime flux
HOST: Willow
Foam at site of infection. Slime fluxes are common but the causal agent has not been identified.
Slime flux | Willow
DISEASE: Slime flux
HOST: Willow (Salix sp.)
PATHOGEN: Causal agent unknown
SOURCE: S. Thomson
DISEASE: Witches'-broom
HOST: Willow
Twig with witches'-broom symptoms.
Witches'-broom | Willow
DISEASE: Witches'-broom
HOST: Willow (Salix sp.)
PATHOGEN: 'Candidatus Phytoplasma' sp.
PATHOGEN SYNONYM: Phytoplasma (undefined)
SOURCE: W. Sinclair