RESULTS

(15)

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DISEASE: Bacterial leaf spot (Bacterial necrosis)

HOST: Cassava

Cassava with yellowish leaves and water-soaked, angular spots. The disease is primarily on foliage, although the pathogen may invade stem buds and young branches.

Bacterial leaf spot (Bacterial necrosis) | Cassava

DISEASE: Bacterial leaf spot (Bacterial necrosis)

HOST: Cassava (Manihot esculenta)

PATHOGEN: Xanthomonas cassavae

PATHOGEN SYNONYM: Xanthomonas campestris pv. cassavae

SOURCE: APS

DISEASE: Bacterial leaf spot (Bacterial necrosis)

HOST: Cassava

Cassava with brownish lesions and blackish edges. Leaves turn yellow with multiple infection sites.

Bacterial leaf spot (Bacterial necrosis) | Cassava

DISEASE: Bacterial leaf spot (Bacterial necrosis)

HOST: Cassava (Manihot esculenta)

PATHOGEN: Xanthomonas cassavae

PATHOGEN SYNONYM: Xanthomonas campestris pv. cassavae

SOURCE: H. Maraite, A. Alvarez

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: Citrus greening (Huanglongbing)

HOST: Citrus (sp. unknown)

Citrus psyllid (Diaphorina citri), a vector of 'Candidatus Liberibacter asiaticus', the cause of citrus greening, feeding on green twig.

Citrus greening (Huanglongbing) | Citrus (sp. unknown)

DISEASE: Citrus greening (Huanglongbing)

HOST: Citrus (sp. unknown) (Citrus sp.)

PATHOGEN: 'Candidatus Liberibacter asiaticus'

PATHOGEN SYNONYM: Candidatus Liberobacter asiaticus

SOURCE: C. Jacobson

DISEASE: Citrus greening (Huanglongbing)

HOST: Citrus (sp. unknown)

Citrus psyllid (Diaphorina citri), a vector of 'Candidatus Liberibacter asiaticus', the cause of citrus greening.

Citrus greening (Huanglongbing) | Citrus (sp. unknown)

DISEASE: Citrus greening (Huanglongbing)

HOST: Citrus (sp. unknown) (Citrus sp.)

PATHOGEN: 'Candidatus Liberibacter asiaticus'

PATHOGEN SYNONYM: Candidatus Liberobacter asiaticus

SOURCE: C. Jacobson

DISEASE: Citrus greening (Huanglongbing)

HOST: Citrus (sp. unknown)

Citrus psyllid (Diaphorina citri), a vector of 'Candidatus Liberibacter asiaticus', the cause of citrus greening.

Citrus greening (Huanglongbing) | Citrus (sp. unknown)

DISEASE: Citrus greening (Huanglongbing)

HOST: Citrus (sp. unknown) (Citrus sp.)

PATHOGEN: 'Candidatus Liberibacter asiaticus'

PATHOGEN SYNONYM: Candidatus Liberobacter asiaticus

SOURCE: C. Hirayama

DISEASE: Citrus greening (Huanglongbing)

HOST: Citrus (Orange)

Mature infected fruit may be misshapen and vary in degree of greening.

Citrus greening (Huanglongbing) | Citrus (Orange)

DISEASE: Citrus greening (Huanglongbing)

HOST: Citrus (Orange) (Citrus sinensis)

PATHOGEN: 'Candidatus Liberibacter asiaticus'

PATHOGEN SYNONYM: Candidatus Liberobacter asiaticus

SOURCE: R. McCoy, M. Davis