Root transcriptomic responses of grafted grapevines to heterogeneous nitrogen availability depend on rootstock genotype.

ABSTRACT: In many fruit species, including grapevine, grafting is used to improve scion productivity and quality and to adapt the plant to environmental conditions. However, the mechanisms underlying the rootstock control of scion development are still poorly understood. The ability of rootstocks to regulate nitrogen uptake and assimilation may contribute to this control. A split-root system was used to grow heterografted grapevines and to investigate the molecular responses to changes in nitrate availability of two rootstocks known to affect scion growth differently. Transcriptome profiling by RNA sequencing was performed on root samples collected 3 and 24 h after nitrogen supply. The results demonstrated a common response involving nitrogen-related genes, as well as a more pronounced transcriptomi

SUBMITTER: Cochetel N 

PROVIDER: S-EPMC5854021 | biostudies-literature | 2017 Jul

REPOSITORIES: biostudies-literature