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- W4307805218 abstract "Abstract Higher dietary intakes of flavonoids may have a beneficial role in cardiovascular disease prevention. Additionally, supplementation of branched-chain amino acids (BCAAs) in vegan diets can reduce risks associated to their deficiency, particularly in older adults, which can cause loss of skeletal muscle strength and mass. Most plant-derived foods contain only small amounts of BCAAs and those plants with high levels of flavonoids are not eaten broadly. Here we describe the generation of metabolically-engineered cisgenic tomatoes enriched in both flavonoids and BCAAs. In this approach, coding and regulatory DNA elements, all derived from the tomato genome, were combined to obtain a herbicide-resistant version of an acetolactate synthase (mSlALS) gene expressed broadly, and a MYB12-like transcription factor (SlMYB12) expressed in a fruit-specific manner. The mSlALS played a dual role, as a selectable marker as well as being key enzyme in BCAA enrichment. The resulting cisgenic tomatoes were highly enriched in Leucine (21-fold compared to wild type levels), Valine (9-fold), Isoleucine (3-fold), and concomitantly biofortified in several antioxidant flavonoids including kaempferol (64-fold) and quercetin (45-fold). Comprehensive metabolomic and transcriptomic analysis of the biofortified cisgenic tomatoes revealed marked differences to wild type and could serve to evaluate the safety of these biofortified fruits for human consumption." @default.
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- W4307805218 date "2022-11-01" @default.
- W4307805218 modified "2023-09-27" @default.
- W4307805218 title "Dually biofortified cisgenic tomatoes with increased flavonoids and branched-chain amino acids content" @default.
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- W4307805218 doi "https://doi.org/10.1101/2022.10.31.514528" @default.
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