RESULTS

(8)

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DISEASE: Bacterial gall

HOST: Carrot

Root with many galls of different sizes.

Bacterial gall | Carrot

DISEASE: Bacterial gall

HOST: Carrot (Daucus carota)

PATHOGEN: Rhizobacter dauci

SOURCE: H. Kuwata

DISEASE: Bacterial gall

HOST: Carrot

Galls caused from inoculation of injured roots (left two) and uninjured roots (center two). Uninjured, noninoculated root (right).

Bacterial gall | Carrot

DISEASE: Bacterial gall

HOST: Carrot (Daucus carota)

PATHOGEN: Rhizobacter dauci

SOURCE: M. Goto

DISEASE: Bacterial heart rot

HOST: Palm

Palm with advanced stage of heart rot. Symptoms of mature palms include rapid browning and desiccation of foliage, rot of roots and buds, and aborted fruits.

Bacterial heart rot | Palm

DISEASE: Bacterial heart rot

HOST: Palm (Cocos nucifera)

PATHOGEN: Phytomonas sp.

SOURCE: R. McCoy, M. Davis

DISEASE: Bacterial leaf streak

HOST: Oat

Leaf with long, dark red streaks.

Bacterial leaf streak | Oat

DISEASE: Bacterial leaf streak

HOST: Oat (Avena sativa)

PATHOGEN: Xanthomonas translucens pv. cerealis

SOURCE: L. Claflin

DISEASE: Black chaff (Bacterial leaf streak)

HOST: Wheatgrass

Lesions on leaves first appear as water-soaked, translucent, long, narrow streaks. They later turn brown and necrotic and often coalesce into blighted areas.

Black chaff (Bacterial leaf streak) | Wheatgrass

DISEASE: Black chaff (Bacterial leaf streak)

HOST: Wheatgrass (Elytrigia intermedia)

PATHOGEN: Xanthomonas translucens pv. cerealis

SOURCE: S. Mohan

DISEASE: Black chaff (Bacterial leaf streak)

HOST: Wheatgrass

Close-up of leaf with brown necrotic streaks.

Black chaff (Bacterial leaf streak) | Wheatgrass

DISEASE: Black chaff (Bacterial leaf streak)

HOST: Wheatgrass (Elytrigia intermedia)

PATHOGEN: Xanthomonas translucens pv. cerealis

SOURCE: S. Mohan

DISEASE: Sudden death (Wilt)

HOST: Palm

Palm in Columbia with severe yellowing of leaves.

Sudden death (Wilt) | Palm

DISEASE: Sudden death (Wilt)

HOST: Palm (Elaeis guineensis)

PATHOGEN: Phytomonas sp.

SOURCE: R. McCoy, M. Davis

DISEASE: Sudden death (Wilt)

HOST: Palm

Palm with desiccated, wilted leaves, a symptom of the disease.

Sudden death (Wilt) | Palm

DISEASE: Sudden death (Wilt)

HOST: Palm (Elaeis guineensis)

PATHOGEN: Phytomonas sp.

SOURCE: R. McCoy, M. Davis