Integrated transcriptomic and metabolomic analysis revealed altitude-related regulatory mechanisms on flavonoid accumulation in potato tubers
文献类型： 外文期刊
作者： Liu, Yuhui 1 ; Li, Yuanming 1 ; Liu, Zhen 1 ; Wang, Lei 2 ; Bi, Zhenzhen 1 ; Sun, Chao 1 ; Yao, Panfeng 1 ; Zhang, Junlian 1 ; Bai, Jiangping 1 ; Zeng, Yuting 3 ;
作者机构： 1.Gansu Agr Univ, Agron Coll, State Key Lab Aridland Crop Sci, Lanzhou 730070, Peoples R China
2.Hebei North Univ, Potato Res Ctr, Zhangjiakou 075000, Peoples R China
3.Tibet Acad Agr & Anim Husb Sci, Lasa 850000, Peoples R China
关键词： Altitude; Flavonoid; Metabolome; Repressors; Transcriptome; Potato(Solanum tuberosum L; )
期刊名称：FOOD RESEARCH INTERNATIONAL （ 影响因子：8.1； 五年影响因子：7.7 ）
ISSN： 0963-9969
年卷期： 2023 年 170 卷
页码：
收录情况： SCI
摘要： Not least because it is adaptable to a variety of geographies and climates, potato (Solanum tuberosum L.) is grown across much of the world. Pigmented potato tubers have been found to contain large quantities of flavonoids, which have various functional roles and act as antioxidants in the human diet. However, the effect of altitude on the biosynthesis and accumulation of flavonoids in potato tubers is poorly characterized. Here we carried out an integrated metabolomic and transcriptomic study in order to evaluate how cultivation at low (800 m), moderate (1800 m), and high (3600 m) altitude affects flavonoid biosynthesis in pigmented potato tubers. Both red and purple potato tubers grown at a high altitude contained the highest flavonoid content, and the most highly pigmented flesh, followed by those grown at a low altitude. Co-expression network analysis revealed three modules containing genes which were positively correlated with altitude-responsive flavonoid accumulation. The anthocyanin repressors StMYBATV and StMYB3 exhibited a significant positive relationship with altituderesponsive flavonoid accumulation. The repressive function of StMYB3 was further verified in tobacco flowers and potato tubers. The results presented here add to the growing body of knowledge regarding the response of flavonoid biosynthesis to environmental conditions, and should aid in efforts to develop novel varieties of pigmented potatoes for use across different geographies.
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