Modulation of scion gene expression in grapevines by rootstock and environment

This study examines the role of rootstock genotype and local environmental conditions in shaping the gene expression of the scion in grafted grapes. Rootstocks have been shown to modulate elemental composition, metabolomic profile, and the shape of leaves in the scion, among other traits. However, it is currently unclear how the rootstock genotype influences shoot system gene expression as previous studies have reported complex and often contradictory findings. In the present study, we examine the influence of grafting on scion gene expression in the leaves and reproductive tissues over time as vines experience a range of local environmental conditions.