RESULTS

(4)

FILTER

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: Deep bark canker

HOST: Walnut

Pits in the wood and black streaks in inner bark are key diagnostic symptoms.

Deep bark canker | Walnut

DISEASE: Deep bark canker

HOST: Walnut (Juglans regia)

PATHOGEN: Brenneria rubrifaciens

PATHOGEN SYNONYM: Erwinia rubrifaciens

SOURCE: N. Schaad, M. Schroth

DISEASE: Witches'-broom

HOST: Paulownia (Empress tree)

Witches'-broom of paulownia.

Witches'-broom | Paulownia (Empress tree)

DISEASE: Witches'-broom

HOST: Paulownia (Empress tree) (Paulownia tomentosa)

PATHOGEN: 'Candidatus Phytoplasma' sp.

PATHOGEN SYNONYM: Phytoplasma (undefined)

SOURCE: R. Davis, M. Davis