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. 2022 Sep 30;13:998203. doi: 10.3389/fpls.2022.998203

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Copyright © 2022 Zhang, Zhang, Guo, Qi, Tang, Li, Zuo, Shahzad, Feng, Zang, Wang, Qiao, Wu and Xing.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Different expressions of structural genes (red) and metabolites in flavonoid biosynthesis pathway. Red and blue blocks represent upregulation and downregulation of expression, respectively. Abbreviations: PAL, phenylalanine ammonia lyase; 4CL, 4-eoumarate coenzyme A ligases; CHS, chalcone synthase; F3H, flavonoid 3-hydroxylase; CYP75B, cytochromes P450; ANS, anthocyanidin synthase; DFR, dihydroflavonol 4-reductase; ANR, anthocyanidin reductase.