DISEASE: Bacterial leaf spot (Head rot)
HOST: Cauliflower
Leaves with tiny lesions surrounded by large halos.
Bacterial leaf spot (Head rot) | Cauliflower
DISEASE: Bacterial leaf spot (Head rot)
HOST: Cauliflower (Brassica oleracea var. botrytis)
PATHOGEN: Pseudomonas syringae pv. maculicola
SOURCE: R. Campbell
DISEASE: Bacterial leaf spot (Head rot)
HOST: Cauliflower
Section of a cauliflower head with discolored, infected tissues.
Bacterial leaf spot (Head rot) | Cauliflower
DISEASE: Bacterial leaf spot (Head rot)
HOST: Cauliflower (Brassica oleracea var. botrytis)
PATHOGEN: Pseudomonas syringae pv. maculicola
SOURCE: R. Campbell
DISEASE: Bacterial leaf spot (Head rot)
HOST: Lettuce
Leaf with black, greasy spots that tend to be vein delimited. Lesions begin as small, angular, water-soaked lesions that coalesce, resulting in large necrotic areas.
Bacterial leaf spot (Head rot) | Lettuce
DISEASE: Bacterial leaf spot (Head rot)
HOST: Lettuce (Lactuca sativa)
PATHOGEN: Xanthomonas axonopodis pv. vitians
PATHOGEN SYNONYM: Xanthomonas campestris pv. vitians
SOURCE: A. Alvarez
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: Halo blight
HOST: Bean
Chlorotic, systemic symptoms with necrotic lesions on leaves of 'Romano' common bean.
Halo blight | Bean
DISEASE: Halo blight
HOST: Bean (Phaseolus vulgaris 'Romano')
PATHOGEN: Pseudomonas syringae pv. phaseolicola
PATHOGEN SYNONYM: Pseudomonas savastanoi pv. phaseolicola
SOURCE: M. Schroth
DISEASE: Halo blight
HOST: Bean
Leaf of 'Bountiful' bean with chlorotic halos, an early stage of disease. Tiny water-soaked are difficult to see.
Halo blight | Bean
DISEASE: Halo blight
HOST: Bean (Phaseolus vulgaris 'Bountiful')
PATHOGEN: Pseudomonas syringae pv. phaseolicola
PATHOGEN SYNONYM: Pseudomonas savastanoi pv. phaseolicola
SOURCE: M. Schroth