RESULTS

(5)

FILTER

DISEASE: Pierce's disease

HOST: Grape

Leaves with bright yellow, chlorotic areas with dead, dry, necrotic adjacent tissues.

Pierce's disease | Grape

DISEASE: Pierce's disease

HOST: Grape (Vitis vinifera)

PATHOGEN: Xylella fastidiosa

SOURCE: J. Clark, S. Purcell

DISEASE: Pierce's disease

HOST: Grape

Early symptoms of Pierce's disease on leaves. Symptoms vary greatly among cultivars.

Pierce's disease | Grape

DISEASE: Pierce's disease

HOST: Grape (Vitis vinifera 'Chardonnay')

PATHOGEN: Xylella fastidiosa

SOURCE: J. Clark, S. Purcell

DISEASE: Pierce's disease

HOST: Grape

Late-season wood on diseased canes fail to mature, leaving green "islands" of tissue surrounded by dark brown, mature wood.

Pierce's disease | Grape

DISEASE: Pierce's disease

HOST: Grape (Vitis vinifera 'Fiesta')

PATHOGEN: Xylella fastidiosa

SOURCE: S. Purcell

DISEASE: Syringae leaf spot

HOST: Tomato

Leaves with brown necrotic lesions and chlorotic margins. Symptoms vary greatly among cultivars. Some have black or brown lesions with bright yellow, chlorotic areas and others do not have yellowing.

Syringae leaf spot | Tomato

DISEASE: Syringae leaf spot

HOST: Tomato (Lycopersicon esculentum)

PATHOGEN: Pseudomonas syringae pv. syringae

SOURCE: R. Gitaitis

DISEASE: Wildfire (Angular leaf spot)

HOST: Tobacco

Characteristic symptoms are necrotic, brown spots with angular margins surrounded by distinct yellow halos. The halos are caused by the production of tabtoxin.

Wildfire (Angular leaf spot) | Tobacco

DISEASE: Wildfire (Angular leaf spot)

HOST: Tobacco (Nicotiana tabacum)

PATHOGEN: Pseudomonas syringae pv. tabaci

SOURCE: G. Lucas