The sucrose signalling route controls Flavescence doree phytoplasma load in grapevine leaves.

ABSTRACT: Flavescence dorée (FD) is a phytoplasma disease transmitted by insects, causing severe damage in vineyards across Europe. Since there is no effective treatment, infected plants must be removed to prevent further spread. There is variation in susceptibility to FD among different grapevine cultivars, and some exhibit symptom remission, known as recovery, although the mechanisms behind this are unclear. Diseased plants accumulate soluble sugars, including sucrose, which influences the concentration of trehalose-6-phosphate (T6P), a signalling molecule affecting plant growth and stress responses. It is hypothesized that sucrose-mediated signalling via T6P could trigger defence mechanisms, reducing FD pathogen load and increasing plant recovery. To test this hypothesis, two grapevine genotypes

SUBMITTER: Morabito C 

PROVIDER: S-EPMC12321740 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature