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. 2016 Sep 1;6:32534. doi: 10.1038/srep32534

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Copyright © 2016, The Author(s)

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The hypomethylation of the CsAN1 promoter activated the expression of CsAN1. CsAN1 interact with CsGL3 to recruits CsTTG1 to form MBW protein complexe, subsequently activation the expression of anthocyanin LBGs. Environment factors, low temperature and long-photoperiod activation expression of MBW protein complex, which significantly activating on the anthocyanin pathway. As a result, the biosynthesis of anthocyanin is greatly increased, causing the purple-coloration.