0000000000450393
AUTHOR
Guillaume Morvan
.) Clone-dependent expression of grapevine esca disease.
International audience; The occurrence of grapevine trunk diseases (GTDs) increases gradually within vineyards, leading to important economic losses. Several factors could affect grapevine susceptibility to GTDs, especially climate, vine age, soil fertilization, and also rootstock, cultivar and clone. For a cultivar, the level of disease expression can vary with region and from year to year. In this context, our objective was to assess if the expression of esca disease, one of the most widespread GTDs, was also clone-dependent. Two clones (76 and 95) of the “Chardonnay” cultivar, grown in the same plot, were compared according to their developmental and physiological traits, metabolome, and…
Clone-Dependent Expression of Esca Disease Revealed by Leaf Metabolite Analysis
International audience; Grapevine trutk diseases, especially Esca, are of major concern since they gradually alter vineyards worldwide and cause heavy economic losses. The expression of Esca disease symptoms depends on several factors, including the grapevine cultivar. In this context, a possible clone-dependent expression of the Esca disease was studied. Two clones of 'Chardonnay' grown in the same plot were compared according to their developmental and physiological traits, metabolome, and foliar symptom expression. Analysis of their leaf metabolome highlighted differences related to symptom expression. Interestingly, the content of a few specific metabolites exhibited opposite variations…
Expression clone-dépendante de l’Esca chez la vigne
National audience; L’incidence des maladies du bois de la vigne (MDB) augmente graduellement au sein des vignobles, causant d’importantes pertes économiques. Le coût mondial du remplacement de vignes malades est estimé à plus d’1,5 milliards de dollars par an [1]. En France, presque 13% du vignoble est affecté [2]. Plusieurs facteurs pourraient influencer la sensibilité aux MDB, notamment le climat, l’âge de la vigne, la fertilisation du sol, le porte-greffe ainsi que le cépage [3]. Actuellement, aucun cépage tolérant aux MDB n’a pu être identifié et le niveau de l’expression des MDB pour un cépage donné peut varier en fonction de la région et d’une année à l’autre [3], et probablement selo…