DISEASE: Bacterial blight (Brown stem)
HOST: Celery
Lesions are necrotic and circular to angular. Some have yellowish halos. Older lesions become brown and dry.
Bacterial blight (Brown stem) | Celery
DISEASE: Bacterial blight (Brown stem)
HOST: Celery (Apium graveolens)
PATHOGEN: Pseudomonas cichorii
SOURCE: R. Raid
DISEASE: Bacterial blight (Brown stem)
HOST: Celery
Ooze from lesion on celery leaf.
Bacterial blight (Brown stem) | Celery
DISEASE: Bacterial blight (Brown stem)
HOST: Celery (Apium graveolens)
PATHOGEN: Pseudomonas cichorii
SOURCE: R. Raid
DISEASE: Bacterial blight (Brown stem)
HOST: Celery
Characteristic brown discoloration of petioles, which is more evident on inside of petiole close to the crown. Parenchyma tissues are firm and brown.
Bacterial blight (Brown stem) | Celery
DISEASE: Bacterial blight (Brown stem)
HOST: Celery (Apium graveolens)
PATHOGEN: Pseudomonas cichorii
SOURCE: K. Pernezny
DISEASE: Bacterial blight
HOST: Pea
Pea pod with diseased seeds and infection along the suture.
Bacterial blight | Pea
DISEASE: Bacterial blight
HOST: Pea (Pisum sativum)
PATHOGEN: Pseudomonas syringae pv. pisi
SOURCE: J. M. Kraft
DISEASE: Bacterial blight
HOST: Pea
Pea plant with water-soaked lesions on stems and leaves with some bacterial exudate evident. Irregular lesions turn dark brown with light tan centers. Severe distortion of stems, petioles, and growing points may occur.
Bacterial blight | Pea
DISEASE: Bacterial blight
HOST: Pea (Pisum sativum)
PATHOGEN: Pseudomonas syringae pv. pisi
SOURCE: S. Thomson
DISEASE: Bacterial blight
HOST: Pea
Dark lesions on pods and dorsal sutures.
Bacterial blight | Pea
DISEASE: Bacterial blight
HOST: Pea (Pisum sativum)
PATHOGEN: Pseudomonas syringae pv. pisi
SOURCE: J. Young
DISEASE: Bacterial blight
HOST: Pea
Severely diseased plant with array of blight symptoms.
Bacterial blight | Pea
DISEASE: Bacterial blight
HOST: Pea (Pisum sativum)
PATHOGEN: Pseudomonas syringae pv. pisi
SOURCE: J. Young
DISEASE: Bacterial blight
HOST: Pea
Leaves with typical blight symptoms. The disease also affects nodes, stipules, floral parts, stems, and pods.
Bacterial blight | Pea
DISEASE: Bacterial blight
HOST: Pea (Pisum sativum)
PATHOGEN: Pseudomonas syringae pv. pisi
SOURCE: M. Schroth
DISEASE: Bacterial brown rot
HOST: Orchid
Phalaenopsis orchid with yellowish brown spot on leaf (left), an early stage of disease.
Bacterial brown rot | Orchid
DISEASE: Bacterial brown rot
HOST: Orchid (Phalaenopsis sp.)
PATHOGEN: Acidovorax cattleyae
PATHOGEN SYNONYM: Acidovorax avenae subsp. cattleyae
SOURCE: R. McMillan