DISEASE: Bacterial blight and bacterial leaf streak
HOST: Rice
Xanthomonas oryzae pv. oryzicola (bacterial leaf streak) causes water-soaked streaks with yellow ooze (left side), and X. oryzae pv. oryzae (bacterial blight) causes brown streaks that have turned white (right side).
Bacterial blight and bacterial leaf streak | Rice
DISEASE: Bacterial blight and bacterial leaf streak
HOST: Rice (Oryza sativa)
PATHOGEN: Xanthomonas oryzae pv. oryzicola
PATHOGEN SYNONYM: Xanthomonas campestris pv. oryzae
SOURCE: T. Mew
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
DISEASE: Bacterial stem and root rot
HOST: Sweet potato
Rot and collapse of stem, petioles, and leaves caused by systemic infection.
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
DISEASE: Bacterial stem and root rot
HOST: Sweet potato
Rot and internal discoloration of tuber.
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: C. Clark
DISEASE: Citrus variegated chlorosis
HOST: Citrus (sp. unknown)
Leaf with chlorosis in interveinal spaces and brown spots visible on lower leaf surface.
Citrus variegated chlorosis | Citrus (sp. unknown)
DISEASE: Citrus variegated chlorosis
HOST: Citrus (sp. unknown) (Citrus sp.)
PATHOGEN: Xylella fastidiosa
SOURCE: M. J. G. Beretta
DISEASE: Citrus variegated chlorosis
HOST: Citrus (sp. unknown)
Interveinal chlorosis on upper side of leaves.
Citrus variegated chlorosis | Citrus (sp. unknown)
DISEASE: Citrus variegated chlorosis
HOST: Citrus (sp. unknown) (Citrus sp.)
PATHOGEN: Xylella fastidiosa
SOURCE: M. J. G. Beretta
DISEASE: Citrus variegated chlorosis
HOST: Citrus (sp. unknown)
Leafhopper (Oncometopia nigricans) vector of Xylella fastidiosa, which transmits citrus variegated chlorosis.
Citrus variegated chlorosis | Citrus (sp. unknown)
DISEASE: Citrus variegated chlorosis
HOST: Citrus (sp. unknown) (Citrus sp.)
PATHOGEN: Xylella fastidiosa
SOURCE: D. Hopkins
DISEASE: Citrus variegated chlorosis
HOST: Citrus (Orange)
Small, hard, diseased fruit interspersed with three normal fruits for comparison. Diseased fruit often exhibit sunburn symptoms.
Citrus variegated chlorosis | Citrus (Orange)
DISEASE: Citrus variegated chlorosis
HOST: Citrus (Orange) (Citrus sinensis)
PATHOGEN: Xylella fastidiosa
SOURCE: M. J. G. Beretta
DISEASE: Citrus variegated chlorosis
HOST: Citrus (Orange)
Diseased tree with sparse foliage.
Citrus variegated chlorosis | Citrus (Orange)
DISEASE: Citrus variegated chlorosis
HOST: Citrus (Orange) (Citrus sinensis)
PATHOGEN: Xylella fastidiosa
SOURCE: S. Purcell