Xylella fastidiosa

(click on the images to enlarge them)

Pierce's disease (X. fastidiosa) of grapevine. Irregular ripening of bark.
Petiole detach at distal end first.
J. Clark - University of California, Berkeley (US)

Pierce's disease of grapevine.
Symptoms in cultivar Chardonnay.
J. Clark - University of
California, Berkeley (US)

Pierce's disease of grapevine.
Symptoms in cultivar Merlot.
J. Clark University of
California, Berkeley (US)

Pierce's disease of grapevine. Spring symptoms in cultivar Chardonnay (healthy leaf on the left).
A.H. Purcell - University of California,
Berkeley (US)

Pierce's disease of grapevine.
Persistent petioles.
J. Clark & A.H. Purcell
University of California, Berkeley (US)

Pierce's disease of grapevine.
Symptoms in cultivar Chardonnay
( under moisture stress).
A.H. Purcell - University of California, Berkeley (US)


Yellowing and desiccation of grapevine leaves, and wilting of bunches, due to X. fastidiosa in the Napa Valley, California (US) ENSA, Montpellier (FR)	Uneven ripening of grapevine shoots, a very characteristic symptom of Pierce's disease. D. Boubals - ENSA, Montpellier (FR)

Red-headed sharpshooter, Carneocephala fulgida, vector of grapevine Pierce's disease.
J. Clark - University of California, Berkeley (US)

Green sharpshooter (female), Draeculacephala minerva,
vector of grapevine Pierce's disease.
J. Clark - University of California, Berkeley (US)

Blue-green sharpshooter, Graphocephala atropunctata,
vector of grapevine Pierce's disease. Adult (female) on grapevine.
A.H. - Purcell University of California, Berkeley (US)

Back to list