Acta Horticulturae Sinica ›› 2022, Vol. 49 ›› Issue (11): 2357-2366.doi: 10.16420/j.issn.0513-353x.2021-0811

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Evaluation of Steroidal Glycoalkaloids and Analysis of Related Gene Expression in Potato Resources

YE Guangji1,2, ZHENG Zhenzhen1, NA Tiancang1,2, WANG Jian1,2,**()   

  1. 1Qinghai Academy of Agriculture and Forestry Sciences,Xining 810016,China
    2Qinghai Provincial Key Laboratory of Potato Breeding,Laboratory for Research and Utilization of Qinghai Tibet Plateau Germplasm Resources,Qinghai University Key Laboratory of Qinghai-Tibet Plateau Biotechnology of the Ministry of Education,Provincial and Ministry Co-construction of the State Key Laboratory of Sanjiangyuan Ecology and Plateau Agriculture and Animal Husbandry,Xining 810016,China
  • Received:2022-04-07 Revised:2022-08-17 Online:2022-11-25 Published:2022-11-25
  • Contact: WANG Jian


The content of SGAs(Steroidal glycoalkaloids)was evaluated in the leaf and peel tissue of 11 potato resources,the resources with relatively low level of SGAs were selected. The gene expression related to the SGAs biosynthesis was determined in Xiazhai 65,LZ111,Q072625,Longshu 7,Qingshu 9,and Qingshu 11,which would help confirm the key genes in SGAs biosynthesis of potato and provide the potential to create the low SGAs potato resources in the future. These results showed that SGAs content in the leaves of 11 cultivars was 0.08600-1.58066 mg · g-1 FW;the SGAs content in the peel tissue of potato tubers was 0.01415-0.18450 mg · g-1 FW and lower than 0.20 mg · g-1 FW(the safety level). The genes of StSQS1StCASStSSR2 and StGAME4 played key roles in SGAs biosynthesis.

Key words: Solanum tuberosum, steroidal glycoalkaloids, expression of gene

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