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RESULTS

(7)

DISEASE: Brown line and decline

HOST: Almond

Stunted and yellowish diseased tree. Such trees produce little to no growth and decline rapidly.

DISEASE: Brown line and decline

HOST: Almond

Bark was split laterally at graft union, revealing line of necrotic tissue that extends into woody cortical tissues.

DISEASE: Brown line and decline

HOST: Almond

Shriveled nuts from infected tree. Two healthy kernels (bottom left).

DISEASE: Periwinkle wilt

HOST: Periwinkle

Infected plants with stunting and sparse foliage (center and right).

DISEASE: Periwinkle wilt

HOST: Periwinkle

Draeculacephala minerva, leafhopper vector of Xylella fastidiosa on plants such as periwinkle and watercress.

DISEASE: Pink disease

HOST: Pineapple

Infected pineapple slices; effect of heating (right) and not heating (left).

DISEASE: Pink disease

HOST: Pineapple

Two clones (A and D) showing different stages of infection. Second and fourth fruits (left to right) have been heated. Disease originally attributed to Gluconobacter oxydans and Enterobacter agglomerans and later to Pantoea citrea.