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Acta Horticulturae Sinica ›› 2025, Vol. 52 ›› Issue (7): 1883-1900.doi: 10.16420/j.issn.0513-353x.2024-0667

• Cultivation·Physiology & Biochemistry • Previous Articles     Next Articles

Understanding the Anabolic Differences of Steroidal Glycoalkaloids in Leaf Between Two Potato Varieties Grown at the Winter and Spring Cropping Patterns

ZHU Xingzhe1, SU Xianyue1, SU Wang2, ZHANG Honglin1, PAN Zhechao3, LIU Tao1, and XU Xiaoyu1,**()   

  1. 1 College of Agronomy and Biotechnology,Yunnan Agricultural University,Kunming 650201,China
    2 Qinghai University,Xining 810016,China
    3 Institute of Cash crop,Yunnan Academy of Agricultural Sciences,Kunming 650205,China
  • Received:2024-10-07 Revised:2025-04-18 Online:2025-07-23 Published:2025-07-23
  • Contact: and XU Xiaoyu

Abstract:

To investigate the impacts of habitat discrepancy on the steroidal glycoalkaoids(SGA)anabolism in the leaves of different potato genotypes under the winter(W)and spring(S)cropping patterns in Yunnan Province,the Qingshu 9(Q9)and Lishu 6(L6)potato varieties were chosen as the major experimental materials for the joint comparative proteomic and metabolomic analysis. Alterations occurred on the leaf SGA metabolism have been preliminarily characterized at the key tuber growing stages,when the two potato varieties were cultivated under the winter and spring cropping patterns,respectively. Results indicated that:(1)Total contents of SGA in the potato leaves displayed an uprising trend with the tuber maturation,but had the most obvious significant differences at the tuber bulking stage,which was thereby selected for omics research based on the two comparison modes(Q9-leafW vs. Q9-leafS;Q9-leafW vs. L6-leafW)(2)It was found that the genotypic difference and cropping pattern induced habitat discrepancy had greatly disturbed the overall protein expression regulation and the resulted metabolites repartitioning in potato leaves on both primary and secondary metabolic levels.(3)There were a total of four differentially expressed proteins and accumulated metabolites,which are highly associated with the SGA biosynthesis,identified in the two comparison modes,respectively. Their diversified functions exhibited distinct regulatory effects on the composition and content variations in the potato leaf SGA across the primary and secondary metabolic phases of the SGA biosynthesis.

Key words: potato, cropping pattern, leaf, SGA, omics