Inheritance of steroidal glycoalkaloids in potato tuber flesh  

作　　者：PENG Zhen WANG Pei TANG Die SHANG Yi LI Can-hui HUANG San-wen ZHANG Chun-zhi 

机构地区：[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

出　　处：《Journal of Integrative Agriculture》2019年第10期2255-2263,共9页农业科学学报（英文版）

基　　金：supported by the Agricultural Science and Technology Innovation Program from the Chinese Academy of Agricultural Sciences(ASTIP-CAAS);the Agricultural Science and Technology Innovation Program Cooperation and Innovation Mission,CAAS(CAAS-XTCX2016);the Advanced Technology Talents in Yunnan Province,China 2013HA025);the PhD Scholar Newcomer Award in Yunnan Province,China(01701205020516025);the Graduate Research and Innovation Fund Project,China(yjs201679);supported by the Ministry of Agriculture and Rural Affairs of China,the Shenzhen Municipal and Dapeng District Governments,China

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 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.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.

关 键 词：steroidal GLYCOALKALOIDS DOMESTICATION TUBER FLESH QTL mapping 

分 类 号：S[农业科学]