LECOMTE, Pascal; DARRIEUTORT, Guillaume; LIMINANA, Jean-Michel; COMONT, Gwenaelle; MURUAMENDIARAZ, A.; LEGORBURU, F.-J.; CHOUEIRI, E.; JREIJIRI, F.; EL AMIL, Roula; FERMAUD, Marc

doi:10.1094/PDIS-09-11-0776-RE

Métadonnées

Afficher la notice complète

Licence d’utilisation du document

LECOMTE, Pascal
Santé et agroécologie du vignoble [UMR SAVE]

DARRIEUTORT, Guillaume
Santé et agroécologie du vignoble [UMR SAVE]

LIMINANA, Jean-Michel
Santé et agroécologie du vignoble [UMR SAVE]

Langue

Article de revue

Ce document a été publié dans

Plant Disease. 2012, vol. 96, n° 7, p. 924-934

American Phytopathological Society

Résumé en anglais

A new study on the development of foliar symptoms of esca was carried out from 2004 to 2006 in five mature vineyards in Aquitaine, France. Symptoms were monitored for severity and changes over time. Initial foliar symptoms were characterized by the presence of drying zones or discolorations (reddening or yellowing), which are symptoms that have also been attributed to Black Dead Arm (BDA). Then, the less-severely affected leaves persisted throughout the summer and developed into typical “tiger-stripe” symptoms of esca. The most severely symptomatic leaves fell soon after symptoms appeared. Severely diseased vines showed typical apoplectic or acute forms of esca that did not differ from the severe BDA forms. The appearance of leaf-symptomatic vines increased uniformly over time, reaching a maximum incidence by the end of July. A second survey in 41 European and Lebanese vineyards showed that longitudinal discolorations were visible under the bark of 95% of the vines showing foliar esca symptoms. These wood symptoms, also previously attributed to BDA, appeared as xylem orange-brown stripes. Thus, foliar symptoms of esca showed transitory phases which overlapped with some BDA descriptions. Most of these symptoms, in the west-palearctic regions that were investigated, were commonly associated with the presence of one or several xylem discolorations.< Réduire

Métadonnées

Partager cette publication !

Licence d’utilisation du document

New insights into esca of grapevine : the development of foliar symptoms and their association with xylem discoloration

Langue

Ce document a été publié dans

Résumé en anglais

URI

DOI

Origine

Unités de recherche