RESULTS

(6)

FILTER

DISEASE: Bacterial leaf spot

HOST: Pellionia

Leaves with dry, irregularly shaped lesions with corky, raised borders on upper surface.

Bacterial leaf spot | Pellionia

DISEASE: Bacterial leaf spot

HOST: Pellionia (Pellionia sp.)

PATHOGEN: Xanthomonas campestris

SOURCE: A. Chase

DISEASE: Bacterial leaf spot

HOST: Pellionia

Leaf lesions are irregular, corky, and slightly raised on lower leaf surfaces. Lesions may fall out, leaving a shot-hole appearance.

Bacterial leaf spot | Pellionia

DISEASE: Bacterial leaf spot

HOST: Pellionia (Pellionia sp.)

PATHOGEN: Xanthomonas campestris

SOURCE: H. Schwartz

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: Foamy canker

HOST: Koa

Foamy canker of koa is associated with bacteria and yeast. The causal agent has not been identified.

Foamy canker | Koa

DISEASE: Foamy canker

HOST: Koa (Acacia koa)

PATHOGEN: Causal agent unknown

SOURCE: H. Keyser

DISEASE: Foamy canker

HOST: Koa

Dieback of koa tree. The causal agent has not been identified.

Foamy canker | Koa

DISEASE: Foamy canker

HOST: Koa (Acacia koa)

PATHOGEN: Causal agent unknown

SOURCE: H. Keyser