DISEASE: Bacterial blight and bacterial leaf streak
HOST: Rice
Xanthomonas oryzae pv. oryzicola (bacterial leaf streak) causes water-soaked streaks with yellow ooze (left side), and X. oryzae pv. oryzae (bacterial blight) causes brown streaks that have turned white (right side).
Bacterial blight and bacterial leaf streak | Rice
DISEASE: Bacterial blight and bacterial leaf streak
HOST: Rice (Oryza sativa)
PATHOGEN: Xanthomonas oryzae pv. oryzicola
PATHOGEN SYNONYM: Xanthomonas campestris pv. oryzae
SOURCE: T. Mew
DISEASE: Bacterial leaf streak
HOST: Millet
Leaf with small, linear, water-soaked, reddish brown stripes.
Bacterial leaf streak | Millet
DISEASE: Bacterial leaf streak
HOST: Millet (Pennisetum glaucum)
PATHOGEN: Xanthomonas campestris pv. pennamericanum
SOURCE: L. Claflin
DISEASE: Bacterial leaf streak
HOST: Millet
Advanced stage of disease.
Bacterial leaf streak | Millet
DISEASE: Bacterial leaf streak
HOST: Millet (Pennisetum glaucum)
PATHOGEN: Xanthomonas campestris pv. pennamericanum
SOURCE: L. Claflin
DISEASE: Bacterial leaf streak
HOST: Rice
Severely diseased leaves with light brown streaks.
Bacterial leaf streak | Rice
DISEASE: Bacterial leaf streak
HOST: Rice (Oryza sativa)
PATHOGEN: Xanthomonas oryzae pv. oryzicola
SOURCE: H. Kaku, M. Goto
DISEASE: Bacterial leaf streak
HOST: Rice
Brownish lesions with tiny droplets of bacterial ooze, resulting from artificial inoculation of the pathogen.
Bacterial leaf streak | Rice
DISEASE: Bacterial leaf streak
HOST: Rice (Oryza sativa)
PATHOGEN: Xanthomonas oryzae pv. oryzicola
SOURCE: H. Kaku, M. Goto
DISEASE: Bacterial leaf streak
HOST: Rice
Copious droplets of bacterial ooze on infected leaf margin (right), typical of advanced stage of disease. Healthy part of leaf (left) has clear guttation fluid.
Bacterial leaf streak | Rice
DISEASE: Bacterial leaf streak
HOST: Rice (Oryza sativa)
PATHOGEN: Xanthomonas oryzae pv. oryzicola
SOURCE: A. Hayward
DISEASE: Pear decline
HOST: Pear
Healthy pear shoot (left) and diseased shoots (center and right). Leaves are reddish and growth is stunted.
Pear decline | Pear
DISEASE: Pear decline
HOST: Pear (Pyrus communis)
PATHOGEN: 'Candidatus Phytoplasma pyri'
PATHOGEN SYNONYM: Phytoplasma Apple proliferation group
SOURCE: S. Thomson
DISEASE: Pear decline
HOST: Pear
Close-up of infected pear branch showing premature reddish coloration of leaves and cupped, stunted leaves.
Pear decline | Pear
DISEASE: Pear decline
HOST: Pear (Pyrus communis)
PATHOGEN: 'Candidatus Phytoplasma pyri'
PATHOGEN SYNONYM: Phytoplasma Apple proliferation group
SOURCE: S. Thomson
DISEASE: Pear decline
HOST: Pear
Reduced growth of infected trees in center of image.
Pear decline | Pear
DISEASE: Pear decline
HOST: Pear (Pyrus communis)
PATHOGEN: 'Candidatus Phytoplasma pyri'
PATHOGEN SYNONYM: Phytoplasma Apple proliferation group
SOURCE: W. Sinclair