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Ancestral chemotypes of cultivated grapevine with resistance to Botryosphaeriaceae-related dieback allocate metabolism towards bioactive stilbenes

Khattab, Islam M.; Sahi, Vaidurya P.; Baltenweck, R.; Maia-Grondard, A.; Hugueney, P.; Bieler, E.; Dürrenberger, M.; Riemann, Michael; Nick, Peter

- Grapevine trunk diseases have devastating consequences on vineyards worldwide. European wild grapevines (Vitis vinifera subs. sylvestris) from the last viable population in Germany along the Rhine river showed variable degrees of resistance against Neofusicoccum parvum (strain Bt‐67), a fungus associated with Botryosphaeriaceae‐related dieback.

- Representative genotypes from different subclades of this population were mapped with respect to their ability to induce wood necrosis, as well as their defence responses in a controlled inoculation system.

- The difference in colonization patterns could be confirmed by cryo‐scanning electron microscopy, while there was no relationship between vessel diameter and infection success. Resistant lines accumulated more stilbenes, that were in addition significantly partitioned to nonglycosylated viniferin trimers. By contrast, the susceptible genotypes accumulated less stilbenes with a significantly higher proportion of glycosylated piceid.

- We suggest a model in which in the resistant genotypes phenylpropanoid metabolism is channelled rapidly and specifically to the bioactive stilbenes. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000125680
Veröffentlicht am 05.11.2020
DOI: 10.1111/nph.16919
Zitationen: 4
Zitationen: 5
Cover der Publikation
Zugehörige Institution(en) am KIT Botanisches Institut (BOTANIK)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 01.2021
Sprache Englisch
Identifikator ISSN: 0028-646X, 1469-8137
KITopen-ID: 1000125680
Erschienen in The new phytologist
Verlag John Wiley and Sons
Band 229
Heft 2
Seiten 1133-1146
Vorab online veröffentlicht am 08.09.2020
Schlagwörter Neofusicoccum parvum, phenyl-propanoid pathway, piceid chemotype, resveratrol-viniferin chemotype, Vitis resistance
Nachgewiesen in Web of Science
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