Inheritance of steroidal glycoalkaloids in potato tuber flesh

文献类型： 外文期刊

第一作者： Peng Zhen

作者： Peng Zhen;Wang Pei;Shang Yi;Li Can-hui;Peng Zhen;Wang Pei;Tang Die;Huang San-wen;Zhang Chun-zhi;Huang San-wen

作者机构：

关键词： steroidal glycoalkaloids; domestication; tuber flesh; QTL mapping

期刊名称：JOURNAL OF INTEGRATIVE AGRICULTURE （ 影响因子：2.848； 五年影响因子：2.979 ）

ISSN： 2095-3119

年卷期： 2019 年 18 卷 10 期

页码：

收录情况： SCI

摘要： Potato (Solanum tuberosum L.) is the third most important food crop worldwide after wheat and rice in terms of human consumption. A critical domestication trait for potato was the decrease of toxic steroidal glycoalkaloids (SGAs) in tuber flesh. Here, we used a diploid F-2 segregating population derived from a cross between S. tuberosum and the wild potato species Solanum chacoense to map the quantitative trait loci (QTLs) associated with the regulation of SGAs content in tuber flesh. In a three-year study, we identified two QTLs on chromosomes 2 and 8 affecting SGAs content in tuber flesh. The QTL on chromosome 8 harbors 38 genes that are co-expressed with the GLYCOALKALOID METABOLISM genes. These findings lay the foundation for exploiting the genes controlling SGAs content in tuber flesh and they provide a theoretical basis for the use of wild germplasm in potato breeding.

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