Transport and accumulation of flavonoids in grapevine (Vitis vinifera L.)
2008
Braidot, Enrico | Zancani, Marco | Petrussa, Elisa | Peresson, Carlo | Bertolini, Alberto | Patui, Sonia | Macrì, Francesco | Vianello, Angelo
Flavonoids are a group of secondary metabolites widely distributed in plants that represent a huge portion of the soluble phenolics present in grapevine (Vitis vinifera L.). These compounds play different physiological roles and are often involved in protection against biotic and abiotic stress. Even if the flavonoid biosynthetic pathways have been largely characterized, the mechanisms of their transport and accumulation in cell wall and vacuole are still not completely understood. This review analyses the known mechanisms of flavonoid uptake and accumulation in grapevine, with reference to the transport models and membrane carrier proteins described in other plant species. The effect of different environmental factors on flavonoid biosynthesis and transporters is also discussed.
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