RESULTS

(11)

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DISEASE: Bacterial blast and black pit

HOST: Citrus (Lemon)

The term "black pit" refers to black lesions on fruit, which may be specks or large, sunken pits as seen here. They also may be light tan, later becoming reddish brown to black.

Bacterial blast and black pit | Citrus (Lemon)

DISEASE: Bacterial blast and black pit

HOST: Citrus (Lemon) (Citrus limon)

PATHOGEN: Pseudomonas syringae pv. syringae

SOURCE: J. Menge

DISEASE: Bacterial blast and black pit

HOST: Citrus (Lime)

Characteristic symptoms of brownish black lesions on twigs and leaves (blast), starting with infection of petioles. Black pit refers to brown to black sunken spots on fruit, 5 to 20 mm in diameter.

Bacterial blast and black pit | Citrus (Lime)

DISEASE: Bacterial blast and black pit

HOST: Citrus (Lime) (Citrus sp.)

PATHOGEN: Pseudomonas syringae pv. syringae

SOURCE: P. Broadbent

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: Black chaff (Bacterial leaf streak)

HOST: Barley

Black chaff is characterized by water-soaked and darkened glumes on barley heads and streaks and stripes on leaves.

Black chaff (Bacterial leaf streak) | Barley

DISEASE: Black chaff (Bacterial leaf streak)

HOST: Barley (Hordeum vulgare)

PATHOGEN: Xanthomonas translucens pv. undulosa

SOURCE: S. Thomson

DISEASE: Black chaff (Bacterial leaf streak)

HOST: Barley

Leaf with linear, water-soaked lesions that turn necrotic and brown. Flakes of dry bacterial exudate are apparent on the lesions. The pathogen also causes black glume of barley.

Black chaff (Bacterial leaf streak) | Barley

DISEASE: Black chaff (Bacterial leaf streak)

HOST: Barley (Hordeum vulgare)

PATHOGEN: Xanthomonas translucens pv. undulosa

SOURCE: S. Thomson

DISEASE: Black chaff (Bacterial leaf streak)

HOST: Wheat

Water-soaked stage of leaf streak.

Black chaff (Bacterial leaf streak) | Wheat

DISEASE: Black chaff (Bacterial leaf streak)

HOST: Wheat (Triticum aestivum)

PATHOGEN: Xanthomonas translucens pv. undulosa

SOURCE: S. Thomson

DISEASE: Black chaff (Bacterial leaf streak)

HOST: Wheat

Interveinal brown streaks and blotches on wheat leaves, a late stage of disease. Symptoms may be confused with other diseases.

Black chaff (Bacterial leaf streak) | Wheat

DISEASE: Black chaff (Bacterial leaf streak)

HOST: Wheat (Triticum aestivum)

PATHOGEN: Xanthomonas translucens pv. undulosa

SOURCE: R. Kilpatrick

DISEASE: Black chaff (Bacterial leaf streak)

HOST: Wheat

Brownish black streaks and blotches on glumes.

Black chaff (Bacterial leaf streak) | Wheat

DISEASE: Black chaff (Bacterial leaf streak)

HOST: Wheat (Triticum aestivum)

PATHOGEN: Xanthomonas translucens pv. undulosa

SOURCE: M. Boosalis

DISEASE: Black chaff (Bacterial leaf streak)

HOST: Wheat

Leaves with blighted leaf tips, and blades with brownish red streaks.

Black chaff (Bacterial leaf streak) | Wheat

DISEASE: Black chaff (Bacterial leaf streak)

HOST: Wheat (Triticum aestivum)

PATHOGEN: Xanthomonas translucens pv. undulosa

SOURCE: L. Claflin