Grapevine woody tissues accumulate stilbenoids following bud burst - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement
Article Dans Une Revue Planta Année : 2023

Grapevine woody tissues accumulate stilbenoids following bud burst

Résumé

Stilbenoids are phenylpropanoid compounds with important biological properties and biotechnological applications that are synthesized in grapevine in response to different stresses. Although they are found in woody tissues, such as canes and buds, their biosynthesis and accumulation have been essentially described in berries. We have previously shown that transcripts encoding secondary metabolism enzymes accumulate in grapevine canes following the transition from dormancy (E-L 1) to bud burst (E-L 4) suggesting that secondary metabolites may accumulate in grapevine canes during this transition. In the present study, using UPLC-MS we demonstrate the accumulation of important metabolites such as ferulic acid and the stilbenoids E-resveratrol, E-piceatannol and E-epsilon-viniferin. Stilbenoids accumulation correlated with the increased expression of several stilbene synthase genes and of VviMYB14, encoding a transcription factor that regulates stilbene biosynthesis. In addition, a general stimulation of the plastidial shikimate pathway was observed. Taken together, results show that important secondary metabolites accumulate in the woody canes during bud burst. These findings may aid biotechnological approaches aimed at extracting biologically active phenolic compounds, including stilbenoids, from grapevine woody tissues.
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hal-04419323 , version 1 (26-01-2024)

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Henrique Noronha, Angélica Silva, Virginie Garcia, Kévin Billet, Alberto C P Dias, et al.. Grapevine woody tissues accumulate stilbenoids following bud burst. Planta, 2023, 258, ⟨10.1007/s00425-023-04270-5⟩. ⟨hal-04419323⟩
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