DISEASE: Bacterial pustule
HOST: Soybean
Early symptoms are minute, pale green spots on young leaves. Later, small pustules form in the center of spots, best observed on underside of leaves. Spots vary in size and darken with age and lesions coalesce. Dead areas are torn away by wind.
Bacterial pustule | Soybean
DISEASE: Bacterial pustule
HOST: Soybean (Glycine max)
PATHOGEN: Xanthomonas axonopodis pv. glycines
PATHOGEN SYNONYM: Xanthomonas campestris pv. glycines
SOURCE: APS
DISEASE: Sheath brown rot
HOST: Rice
Disease symptoms typically occur on flag leaf sheaths from booting to heading stage and also on panicles. Water-soaked lesions on glumes turn light brown.
Sheath brown rot | Rice
DISEASE: Sheath brown rot
HOST: Rice (Oryza sativa)
PATHOGEN: Burkholderia fuscovaginae
PATHOGEN SYNONYM: Pseudomonas fuscovaginae
SOURCE: K. Miyajima, M. Goto
DISEASE: Sheath brown rot
HOST: Rice
Close-up of stem lesions.
Sheath brown rot | Rice
DISEASE: Sheath brown rot
HOST: Rice (Oryza sativa)
PATHOGEN: Burkholderia fuscovaginae
PATHOGEN SYNONYM: Pseudomonas fuscovaginae
SOURCE: K. Miyajima, M. Goto
DISEASE: Sheath brown rot
HOST: Rice
Seedling with rot symptoms.
Sheath brown rot | Rice
DISEASE: Sheath brown rot
HOST: Rice (Oryza sativa)
PATHOGEN: Burkholderia fuscovaginae
PATHOGEN SYNONYM: Pseudomonas fuscovaginae
SOURCE: K. Miyajima, M. Goto
DISEASE: Sheath brown rot
HOST: Rice
Diseased, unhulled grains with brown discoloration. Healthy grain (left).
Sheath brown rot | Rice
DISEASE: Sheath brown rot
HOST: Rice (Oryza sativa)
PATHOGEN: Burkholderia fuscovaginae
PATHOGEN SYNONYM: Pseudomonas fuscovaginae
SOURCE: K. Miyajima, M. Goto
DISEASE: X-disease
HOST: Peach
Typical symptoms of diseased tree with yellowing of leaves. Leaves become necrotic and dehisce.
X-disease | Peach
DISEASE: X-disease
HOST: Peach (Prunus persica)
PATHOGEN: 'Candidatus Phytoplasma pruni'
PATHOGEN SYNONYM: Phytoplasma X-disease group
SOURCE: R. Davis, M. Davis
DISEASE: X-disease
HOST: Peach
Late stage of leaf infection. Red-yellow blotches appear after initial water-soaking of leaves. Margins roll upward and leaves appear tattered.
X-disease | Peach
DISEASE: X-disease
HOST: Peach (Prunus persica)
PATHOGEN: 'Candidatus Phytoplasma pruni'
PATHOGEN SYNONYM: Phytoplasma X-disease group
SOURCE: W. Sinclair
DISEASE: X-disease
HOST: Peach
Stunted foliage (left) with some necrosis and small angular fruit. Healthy foliage and fruit (right).
X-disease | Peach
DISEASE: X-disease
HOST: Peach (Prunus persica)
PATHOGEN: 'Candidatus Phytoplasma pruni'
PATHOGEN SYNONYM: Phytoplasma X-disease group
SOURCE: A. Purcell, M. Davis
DISEASE: X-disease
HOST: Peach
Early symptoms are reddish, blotchy areas on cupped leaves.
X-disease | Peach
DISEASE: X-disease
HOST: Peach (Prunus persica)
PATHOGEN: 'Candidatus Phytoplasma pruni'
PATHOGEN SYNONYM: Phytoplasma X-disease group
SOURCE: D. Rosenberger