Inheritance of steroidal glycoalkaloids in potato tuber flesh

doi:10.1016/S2095-3119(19)62718-8

Journal of Integrative Agriculture ›› 2019, Vol. 18 ›› Issue (10): 2255-2263.DOI: 10.1016/S2095-3119(19)62718-8

收稿日期:2019-01-19 出版日期:2019-10-01 发布日期:2019-09-29

Inheritance of steroidal glycoalkaloids in potato tuber flesh

PENG Zhen^{1, 2}, WANG Pei^{1, 2}, TANG Die², SHANG Yi¹, LI Can-hui¹, HUANG San-wen^{2, 3}, ZHANG Chun-zhi²

¹ The CAAS-YNNU Joint Academy of Potato Sciences, Yunnan Normal University, Kunming 650500, P.R.China
² Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518124, P.R.China
³ Key Laboratory of Biology and Genetic Improvement of Horticultural Crops of the Ministry of Agriculture and Rural Affairs, Sino-Dutch Joint Laboratory of Horticultural Genomics, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China

Received:2019-01-19 Online:2019-10-01 Published:2019-09-29
Contact: Correspondence ZHANG Chun-zhi, Tel: +86-755-23250675, E-mail: zhangchunzhi01@caas.cn
Supported by:
This work was also supported by the Ministry of Agriculture and Rural Affairs of China, the Shenzhen Municipal and Dapeng District Governments, China.

摘要/Abstract

Abstract:

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 F2 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.

Key words: steroidal glycoalkaloids , domestication , tuber flesh , QTL mapping

. [J]. Journal of Integrative Agriculture, 2019, 18(10): 2255-2263.

PENG Zhen, WANG Pei, TANG Die, SHANG Yi, LI Can-hui, HUANG San-wen, ZHANG Chun-zhi. Inheritance of steroidal glycoalkaloids in potato tuber flesh[J]. Journal of Integrative Agriculture, 2019, 18(10): 2255-2263.

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Inheritance of steroidal glycoalkaloids in potato tuber flesh

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