1.17.1.3 up highest expression in roots 1.17.1.3 up leucoanthocyanidin reductase expression in cotton fiber is much higher than their competing enzymes acting on the same substrates (dihydroflavonol 4-reductase and anthocyanidin synthase, respectively) 1.17.1.3 up significantly up-regulated in brown fiber 1.17.1.3 up overexpression of the myeloblastosis (MYB)14 or MYB5 transcription factors induces proanthocyanidin biosynthesis in hairy roots, LAR is induced in MYB5 overexpressing hairy roots 1.17.1.3 up UV-C irradiation induced the transcription of Vv lar1 and Vv lar2 and the synthesis of LAR1 and LAR2 proteins, resulting in increased accumulation of flavanol polyphenol in the grape berries, quantitative real-time RT-PCR enzyme expression analysis, overview 1.17.1.3 up UV-C irradiation induces the transcription of Vv lar1 and Vv lar2 and the synthesis of LAR1 and LAR2 proteins, resulting in increased accumulation of flavanol polyphenol in the grape berries, quantitative real-time RT-PCR enzyme expression analysis, overview