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 spot
HOST: Cowpea
Leaf spots vary in size from small to large and some fall out in time, leaving a shot-hole appearance.
Bacterial leaf spot | Cowpea
DISEASE: Bacterial leaf spot
HOST: Cowpea (Vigna unguiculata)
PATHOGEN: Xanthomonas axonopodis pv. vignicola
PATHOGEN SYNONYM: Xanthomonas campestris pv. vignicola
SOURCE: R. Gitaitis
DISEASE: Bacterial leaf spot
HOST: Cowpea
Leaves with large, light brown necrotic areas.
Bacterial leaf spot | Cowpea
DISEASE: Bacterial leaf spot
HOST: Cowpea (Vigna unguiculata)
PATHOGEN: Xanthomonas axonopodis pv. vignicola
PATHOGEN SYNONYM: Xanthomonas campestris pv. vignicola
SOURCE: R. Gitaitis
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: Pseudomonas leaf spot
HOST: Primrose
Leaf with brownish red spots and reddening of adjacent areas. Disease begins as small, water-soaked lesions that later coalesce into large necrotic spots.
Pseudomonas leaf spot | Primrose
DISEASE: Pseudomonas leaf spot
HOST: Primrose (Primula sp.)
PATHOGEN: Pseudomonas syringae pv. primulae
SOURCE: APS