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

Tedesco, S., Erban, A., Gupta, S., Kopka, J., Fevereiro, P., Kragler, F., et al. (2021). The Impact of Metabolic Scion–Rootstock Interactions in Different Grapevine Tissues and Phloem Exudates. Metabolites, 11(6): 349. doi:10.3390/metabo11060349.

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Tedesco, S.1, Author              
Erban, A.2, Author              
Gupta, S.1, Author              
Kopka, J.2, Author              
Fevereiro, Pedro3, Author
Kragler, F.1, Author              
Pina, Ana3, Author
Affiliations:
1Intercellular Macromolecular Transport, Department Stitt, Max Planck Institute of Molecular Plant Physiology, Max Planck Society, ou_1753331              
2Applied Metabolome Analysis, Department Willmitzer, Max Planck Institute of Molecular Plant Physiology, Max Planck Society, ou_1753338              
3External Organizations, ou_persistent22              

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 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 impact on the metabolome of grafted grapevines when tissues and genotypes were compared, (2) heterografting affects rootstocks more than scions, (3) the presence of a heterologous grafting partner increases defense-related compounds in both scion and rootstocks in shorter and longer distances from the graft, and (4) leaves were revealed as the best tissue to search for grafting-related metabolic markers. These results will provide a valuable metabolomics resource for scion–rootstock interaction studies and will facilitate future efforts on the identification of metabolic markers for important agronomic traits in grafted grapevines.

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Language(s): eng - English
 Dates: 2021
 Publication Status: Published in print
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 Identifiers: DOI: 10.3390/metabo11060349
BibTex Citekey: metabo11060349
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Title: Metabolites
Source Genre: Journal
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Publ. Info: MDPI AG
Pages: - Volume / Issue: 11 (6) Sequence Number: 349 Start / End Page: - Identifier: Other: 2218-1989
CoNE: https://pure.mpg.de/cone/journals/resource/2218-1989