The Impact of Metabolic Scion-Rootstock Interactions in Different Grapevine Tissues and Phloem Exudates.

ABSTRACT: In viticulture, grafting is used to propagate Phylloxera-susceptible European grapevines, thereby using resistant American rootstocks. Although scion-rootstock reciprocal signaling is essential for the formation of a proper vascular union and for coordinated growth, our knowledge of graft partner interactions is very limited. In order to elucidate the scale and the content of scion-rootstock metabolic interactions, we profiled the metabolome of eleven graft combination in leaves, stems, and phloem exudate from both above and below the graft union 5-6 months after grafting. We compared the metabolome of scions vs. rootstocks of homografts vs. heterografts and investigated the reciprocal effect of the rootstock on the scion metabolome. This approach revealed that (1) grafting has a minor imp

SUBMITTER: Tedesco S 

PROVIDER: S-EPMC8228596 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature