数字农科院2.0

The PpAHL17-PpHYH module is involved in light-independent anthocyanin accumulation in fruit peel of Prunus persica

文献类型： 外文期刊

作者： Xiaoyu Zhang;Shihang Sun;Xin Liu;Junren Meng;Mingzhu Yuan;Ang Li;Wenyi Duan;Lei Pan;Zhiqiang Wang;Wenfang Zeng;Liang Niu

作者机构：

关键词： Anthocyanin;Light-independent;PpAHL17;PpHYH;Prunus persica;RNA-seq

期刊名称： Plant Cell Reports

ISSN： 0721-7714

年卷期： 2025 年 44 卷 7 期

页码：

收录情况： SCIE（2025版）

摘要： Key message: The PpAHL17-PpHYH module is involved in the accumulation of light-independent anthocyanins in peach peel. PpAHL17 activated the expression of PpHYH and positively regulated the synthesis of anthocyanin. Abstract: The red color of peach peel is derived from the accumulation of anthocyanins, which significantly impacts its market value. While the understanding of the mechanism underlying light-dependent anthocyanin accumulation in peach peel is comprehensive, the process of light-independent anthocyanin accumulation remains elusive. Here, we examined two peach varieties, ‘Zhongyou 4’ (light-dependent) and ‘Luxing’ (light-independent), which showed different patterns of anthocyanin accumulation after shading bagging treatments. Analysis of these two peach varieties using RNA sequencing (RNA-seq) and weighted correlation network analysis (WGCNA) revealed that the genes PpAHL17 and PpHYH play a key role in regulating light-independent anthocyanin accumulation in peach peel. Under dark conditions, PpAHL17 and PpHYH have a high expression in the peel of the light-independent varieties, but not in the light-dependent varieties. Results from transient overexpression experiments demonstrated that the upregulation of PpAHL17 and PpHYH genes enhanced the biosynthesis of anthocyanins in peach peel. Furthermore, PpAHL17 can bind to the PpHYH promoter, thereby activating its expression, and PpHYH positively regulated the expression of anthocyanin synthesis-related genes PpF3H, PpUFGT, and PpMYB10.1. Our research provides new perspectives on the mechanisms governing the accumulation of anthocyanins in peach peel in the absence of light.

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