DISEASE: Bacterial blight
HOST: Iris
Iris with irregularly shaped, water-soaked lesions and blighted leaves.
Bacterial blight | Iris
DISEASE: Bacterial blight
HOST: Iris (Iris tectorum)
PATHOGEN: Xanthomonas campestris pv. tardicrescens
SOURCE: M. Goto
DISEASE: Bacterial leaf spot
HOST: Lavender
Lavender leaves with dark necrotic areas.
Bacterial leaf spot | Lavender
DISEASE: Bacterial leaf spot
HOST: Lavender (Lavandula sp.)
PATHOGEN: Pseudomonas cichorii
SOURCE: R. Raabe
DISEASE: Brittle root
HOST: Horseradish
Dying, stunted, yellow to brown horseradish plants.
Brittle root | Horseradish
DISEASE: Brittle root
HOST: Horseradish (Armoracia rusticana)
PATHOGEN: Spiroplasma citri
SOURCE: C. Eastman, M. Davis
DISEASE: Brittle root
HOST: Horseradish
Close-up of stunted, yellow horseradish plants.
Brittle root | Horseradish
DISEASE: Brittle root
HOST: Horseradish (Armoracia rusticana)
PATHOGEN: Spiroplasma citri
SOURCE: D. Sherrod
DISEASE: Brittle root
HOST: Horseradish
Horseradish with discolored internal tissues. Healthy root segment (top right).
Brittle root | Horseradish
DISEASE: Brittle root
HOST: Horseradish (Armoracia rusticana)
PATHOGEN: Spiroplasma citri
SOURCE: J. Fletcher, M. Davis