Grapevine woody tissues accumulate stilbenoids following bud burst.

Autor: Noronha H; Department of Biology, Centre of Molecular and Environmental Biology (CBMA), University of Minho, Braga, Portugal. henriquenoronha@bio.uminho.pt., Silva A; Department of Biology, Centre of Molecular and Environmental Biology (CBMA), University of Minho, Braga, Portugal., Garcia V; UMR EGFV, Bordeaux Sciences Agro, INRAE, Université de Bordeaux, 210 Chemin de Leysotte, CS 50008, 33882, Villenave d'Ornon, France., Billet K; EA 2106 Biomolécules et Biotechnologies Végétales, UFR des Sciences Pharmaceutiques, Université de Tours, 31 Av. Monge, 37200, Tours, France., Dias ACP; Department of Biology, Centre of Molecular and Environmental Biology (CBMA), University of Minho, Braga, Portugal., Lanoue A; EA 2106 Biomolécules et Biotechnologies Végétales, UFR des Sciences Pharmaceutiques, Université de Tours, 31 Av. Monge, 37200, Tours, France., Gallusci P; UMR EGFV, Bordeaux Sciences Agro, INRAE, Université de Bordeaux, 210 Chemin de Leysotte, CS 50008, 33882, Villenave d'Ornon, France., Gerós H; Department of Biology, Centre of Molecular and Environmental Biology (CBMA), University of Minho, Braga, Portugal.
Jazyk: angličtina
Zdroj: Planta [Planta] 2023 Nov 14; Vol. 258 (6), pp. 118. Date of Electronic Publication: 2023 Nov 14.
DOI: 10.1007/s00425-023-04270-5
Abstrakt: Main Conclusion: After bud burst, a transcriptional reprogramming of the shikimate and phenylpropanoid pathways occurs in grapevine canes resulting in the accumulation of stilbenoids like resveratrol and viniferin. 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-ε-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.
(© 2023. The Author(s).)
Databáze: MEDLINE
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