数字农科院2.0

Integrated transcriptomic and metabolomic analyses reveal the mechanisms for red fruit coloration in peach cv. ‘Zhongyoupan 9’ under artificial darkness

文献类型： 外文期刊

作者： Tiyu Ding;Xinxin Ma;Xueli Yu;Lirong Wang;Ruijin Zhou;Xiaojin Hou;Yalin Zhao

作者机构：

关键词： anthocyanin;artificial darkness;light-independent;PpHY5;‘Zhongyoupan 9’

期刊名称： Journal of Integrative Agriculture

ISSN： 2095-3119

年卷期： 2025 年 24 卷 10 期

页码：

收录情况： SCIE（2025版） ; ; CSCD（2025-2026年度） ; ; 科技核心（2024版） ; ; 农林核心（2024版）

摘要： While bagged flat peaches gain increasing consumer preference, the bagging process inhibits anthocyanin production and fruit coloration in most peach cultivars. Certain peach cultivars, including the rapidly expanding ‘Zhongyoupan 9’, demonstrate a light-independent anthocyanin biosynthesis pattern and accumulate anthocyanins under artificial darkness. The underlying molecular mechanisms, however, remain unelucidated. This study examined two flat peach varieties: ‘Zhongpan 17’, exhibiting light-dependent anthocyanin biosynthesis, and ‘Zhongyoupan 9’, displaying light-independent anthocyanin biosynthesis. The pericarp of ‘Zhongyoupan 9’ contained substantially higher anthocyanin levels compared to ‘Zhongpan 17’. Metabolomic analysis identified the marked increase in anthocyanins, particularly cyanidin-3-O-glucoside, as the primary factor in ‘Zhongyoupan 9’ coloration under artificial darkness. Transcriptomic analyses revealed that PpHY5 (long hypocotyl 5) showed upregulation in ‘Zhongyoupan 9’ but downregulation in ‘Zhongpan 17’, with its expression pattern correlating positively with color changes in both varieties. The role of PpHY5 in positively regulating anthocyanin biosynthesis was confirmed through reduced anthocyanin levels in peach fruits treated with a PpHY5 virus-induced gene-silencing construct. These findings suggest that the PpHY5 regulates red color development in ‘Zhongyoupan 9’ under artificial darkness.

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