DISEASE: Aster yellows
HOST: Aster
Foliar symptoms of chlorosis, malformation of leaves, and phyllody.
Aster yellows | Aster
DISEASE: Aster yellows
HOST: Aster (Aster sp.)
PATHOGEN: 'Candidatus Phytoplasma asteris'
PATHOGEN SYNONYM: Phytoplasma Aster yellows group
SOURCE: R. McCoy, M. Davis
DISEASE: Aster yellows
HOST: Aster
Flowers with phyllody (left and center). Healthy flower (right).
Aster yellows | Aster
DISEASE: Aster yellows
HOST: Aster (Aster sp.)
PATHOGEN: 'Candidatus Phytoplasma asteris'
PATHOGEN SYNONYM: Phytoplasma Aster yellows group
SOURCE: R. McCoy, M. Davis
DISEASE: Aster yellows
HOST: Aster
Macrosteles sp., a leafhopper vector of aster yellows phytoplasma.
Aster yellows | Aster
DISEASE: Aster yellows
HOST: Aster (Aster sp.)
PATHOGEN: 'Candidatus Phytoplasma asteris'
PATHOGEN SYNONYM: Phytoplasma Aster yellows group
SOURCE: J. Clark, A. Purcell, M. Davis
DISEASE: Bacterial blight
HOST: Mulberry
Leaf with numerous small, dark brown lesions with chlorotic halos.
Bacterial blight | Mulberry
DISEASE: Bacterial blight
HOST: Mulberry (Morus alba)
PATHOGEN: Pseudomonas syringae pv. mori
SOURCE: S. Thomson
DISEASE: Bacterial blight
HOST: Mulberry
Foliage with small, dark lesions with large, yellowish halos.
Bacterial blight | Mulberry
DISEASE: Bacterial blight
HOST: Mulberry (Morus sp.)
PATHOGEN: Pseudomonas syringae pv. mori
SOURCE: M. Sato, M. Goto
DISEASE: Bacterial blight
HOST: Mulberry
Blighted foliage with yellowing and curling of leaves.
Bacterial blight | Mulberry
DISEASE: Bacterial blight
HOST: Mulberry (Morus sp.)
PATHOGEN: Pseudomonas syringae pv. mori
SOURCE: M. Sato, M. Goto
DISEASE: Bacterial spot
HOST: Pepper
Leaves with necrotic spots. The bacterial spot xanthomonads are Xanthomonas euvesicatoria, X. vesicatoria, and X. gardneri.
Bacterial spot | Pepper
DISEASE: Bacterial spot
HOST: Pepper (Capsicum annuum)
PATHOGEN: Xanthomonas bacterial spot pathogens
PATHOGEN SYNONYM: Xanthomonas axonopodis pv. vesicatoria
SOURCE: APS
DISEASE: Bacterial spot
HOST: Pepper
Leaves with water-soaked and brown necrotic lesions. Disease xanthomonads are Xanthomonas euvesicatoria, X. vesicatoria, and X. gardneri.
Bacterial spot | Pepper
DISEASE: Bacterial spot
HOST: Pepper (Capsicum annuum)
PATHOGEN: Xanthomonas bacterial spot pathogens
PATHOGEN SYNONYM: Xanthomonas axonopodis pv. vesicatoria
SOURCE: B. S. Kim
DISEASE: Bacterial spot
HOST: Pepper
Leaves with broad necrotic lesions. Disease xanthomonads are Xanthomonas euvesicatoria, X. vesicatoria, and X. gardneri.
Bacterial spot | Pepper
DISEASE: Bacterial spot
HOST: Pepper (Capsicum annuum)
PATHOGEN: Xanthomonas bacterial spot pathogens
PATHOGEN SYNONYM: Xanthomonas axonopodis pv. vesicatoria
SOURCE: J. Jones