|
|||||
|
|
Inheritance of steroidal glycoalkaloids in potato tuber flesh |
|
| Authors: | Zhen PENG Pei WANG Die TANG Yi SHANG Can-hui LI San-wen HUANG Chun-zhi ZHANG |
| Institution: | 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 |
| 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 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. |
| Keywords: | Correspondence ZHANG Chun-zhi Tel: +86-755-23250675 steroidal glycoalkaloids domestication tuber flesh QTL mapping |
| 本文献已被 CNKI ScienceDirect 等数据库收录！ | |