数字农科院2.0

A genomic variation map provides insights into potato evolution and key agronomic traits

文献类型： 外文期刊

作者： Qun Lian;Yingying Zhang;Jinzhe Zhang;Zhen Peng;Weilun Wang;Miru Du;Hongbo Li;Xinyan Zhang;Lin Cheng;Ran Du;Zijian Zhou;Zhenqiang Yang;Guohui Xin;Yuanyuan Pu;Zhiwen Feng;Qian Wu;Guochao Xuanyuan;Shunbuer Bai;Rong Hu;Sónia Negrão;Glenn J. Bryan;Christian W.B. Bachem;Yongfeng Zhou;Ruofang Zhang;Yi Shang;Sanwen Huang;Tao Lin;Jianjian Qi

作者机构：

关键词： average tuber weight;differentiation;domestication;potato;steroidal glycoalkaloids;tuber dormancy

期刊名称： Molecular Plant

ISSN： 1674-2052

年卷期： 2025 年 18 卷 4 期

页码：

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

摘要： Hybrid potato breeding based on diploid inbred lines is transforming the way of genetic improvement of this staple food crop, which requires a deep understanding of potato domestication and differentiation. In the present study, we resequenced 314 diploid wild and landrace accessions to generate a variome map of 47,203,407 variants. Using the variome map, we discovered the reshaping of tuber transcriptome during potato domestication, characterized genome-wide differentiation between landrace groups Stenotomum and Phureja. We identified a jasmonic acid biosynthetic gene possibly affecting the tuber dormancy period. Genome-wide association studies revealed a UDP-glycosyltransferase gene for the biosynthesis of anti-nutritional steroidal glycoalkaloids (SGAs), and a Dehydration Responsive Element Binding (DREB) transcription factor conferring increased average tuber weight. In addition, genome similarity and group-specific SNP analyses indicated that tetraploid potatoes originated from the diploid Solanum tuberosum group Stenotomum. These findings shed light on the evolutionary trajectory of potato domestication and improvement, providing a solid foundation for advancing hybrid potato-breeding practices.

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