DISEASE: Bacterial blight (Angular leaf spot)
HOST: Cotton
Leaf with advanced stage of blight.
Bacterial blight (Angular leaf spot) | Cotton
DISEASE: Bacterial blight (Angular leaf spot)
HOST: Cotton (Gossypium barbadense)
PATHOGEN: Xanthomonas citri subsp. malvacearum
PATHOGEN SYNONYM: Xanthomonas campestris pv. malvacearum
SOURCE: M. Shurtleff
DISEASE: Bacterial blight (Angular leaf spot)
HOST: Cotton
Highly susceptible (left) and resistant (right) cotton cultivars. The black arm stage of the disease is the most serious and occurs when bacteria invade petioles and then stems.
Bacterial blight (Angular leaf spot) | Cotton
DISEASE: Bacterial blight (Angular leaf spot)
HOST: Cotton (Gossypium barbadense)
PATHOGEN: Xanthomonas citri subsp. malvacearum
PATHOGEN SYNONYM: Xanthomonas campestris pv. malvacearum
SOURCE: APS
DISEASE: Bacterial blight (Angular leaf spot)
HOST: Cotton
Characteristic early symptoms are water-soaked leaf spots and water-soaking along veins.
Bacterial blight (Angular leaf spot) | Cotton
DISEASE: Bacterial blight (Angular leaf spot)
HOST: Cotton (Gossypium barbadense)
PATHOGEN: Xanthomonas citri subsp. malvacearum
PATHOGEN SYNONYM: Xanthomonas campestris pv. malvacearum
SOURCE: A. Hayward
DISEASE: Bacterial blight (Angular leaf spot)
HOST: Cotton
Leaf with dark, angular leaf spots. Systemic invasion causes blackening of midribs.
Bacterial blight (Angular leaf spot) | Cotton
DISEASE: Bacterial blight (Angular leaf spot)
HOST: Cotton (Gossypium barbadense)
PATHOGEN: Xanthomonas citri subsp. malvacearum
PATHOGEN SYNONYM: Xanthomonas campestris pv. malvacearum
SOURCE: APS
DISEASE: Bacterial seedling blight
HOST: Rice
Dead and light brown, infected seedlings in nursery tray.
Bacterial seedling blight | Rice
DISEASE: Bacterial seedling blight
HOST: Rice (Oryza sativa)
PATHOGEN: Burkholderia glumae
PATHOGEN SYNONYM: Pseudomonas glumae
SOURCE: K. Azegami, M. Goto
DISEASE: Bacterial seedling blight
HOST: Rice
Brown, desiccated seedlings in nursery exhibiting basal chlorosis and withering of second and third leaves.
Bacterial seedling blight | Rice
DISEASE: Bacterial seedling blight
HOST: Rice (Oryza sativa)
PATHOGEN: Burkholderia plantarii
PATHOGEN SYNONYM: Pseudomonas plantarii
SOURCE: H. Honma, M. Goto
DISEASE: Bacterial seedling blight
HOST: Rice
Dead seedlings in half of nursery tray. Symptoms are basal chlorosis and withering of second and third leaves. Infected seedlings become reddish brown and desiccated in time.
Bacterial seedling blight | Rice
DISEASE: Bacterial seedling blight
HOST: Rice (Oryza sativa)
PATHOGEN: Burkholderia plantarii
PATHOGEN SYNONYM: Pseudomonas plantarii
SOURCE: K. Azegami, M. Goto
DISEASE: Bacterial seedling blight
HOST: Rice
Basal chlorosis and withering of second and third leaves. Seedlings become reddish brown with a dry appearance over time. Root growth is retarded and seedlings easily lodge.
Bacterial seedling blight | Rice
DISEASE: Bacterial seedling blight
HOST: Rice (Oryza sativa)
PATHOGEN: Burkholderia plantarii
PATHOGEN SYNONYM: Pseudomonas plantarii
SOURCE: K. Azegami
DISEASE: Bacterial stem and root rot
HOST: Sweet potato
Collapse of stems and roots caused by systemic activity of the pathogen.
Bacterial stem and root rot | Sweet potato
DISEASE: Bacterial stem and root rot
HOST: Sweet potato (Ipomoea batatas)
PATHOGEN: Dickeya sp.
PATHOGEN SYNONYM: Erwinia chrysanthemi
SOURCE: N. Schaad