Plant Cell, Tissue and Organ Culture (PCTOC)

, Volume 136, Issue 2, pp 323–337 | Cite as

Plant-specific transcription factor LrTCP4 enhances secondary metabolite biosynthesis in Lycium ruthenicum hairy roots

  • Aysha Arif Chahel
  • Shaohua ZengEmail author
  • Zubaida YousafEmail author
  • Yinyin Liao
  • Ziyin Yang
  • Xiaoyi Wei
  • Wang YingEmail author
Original Article


Lycium ruthenicum Murr. is an important medicinal plant from traditional Chinese medicine. It contains various biologically active compounds, such as phenolics and alkaloids. These secondary metabolites are used extensively in dietary food and pharmaceutical products. However, these phenolics occur at very low concentrations in the roots, and thus, it is expensive to commercially produce them. The present study was proposed to induce a hairy root culture system for the first time in L. ruthenicum to achieve a high concentration of phenolic polyamines and other non-targeted secondary metabolites. The over-expression sequence of the TCP4 gene was retrieved from the transcriptome data of L. ruthenicum (LrTCP4-OE), and a gene construct (with pCAMBIA 1307) was integrated into the genome of L. ruthenicum by Ri-mediated genetic transformation. A total of 21 metabolites were tentatively identified by using ultrahigh-performance liquid chromatography coupled to photodiode array detector/quadrupole time-of-flight mass spectrometry (UPLC-PDA-qTOF-MS). Transgenic hairy root clones had higher relative abundances of kukoamine A and 17 other secondary metabolites than did control-type hairy roots. After 1 month, high-growth transgenic and non-transgenic hairy root lines were subjected to UPLC analysis for absolute quantification (with an authentic standard) of total kukoamine A. Transgenic hairy root lines (LrTCP4-OE) showed higher kukoamine A accumulation (0.14%) than did control hairy roots (0.11%). This enhanced productivity correlated with increased TCP4-OE activity, validating the primary role that TCP4 plays in total kukoamine A synthesis and the efficiency of non-targeted metabolomic techniques in studying plant metabolites.


Traditional Chinese medicine Hairy root culture system TCP4 over-expression UPLC-qTOF Kukoamine A 



This work is financially supported by the National Natural Science Foundation of China (31470391 and 31770334), Youth Innovation Promotion Association, CAS (2015286), and the Scientific Project of Ningxia Agriculture Comprehensive Development (znnfkj2015).

Supplementary material

11240_2018_1518_MOESM1_ESM.pptx (111 kb)
Supplementary material 1 (PPTX 111 KB)
11240_2018_1518_MOESM2_ESM.docx (31 kb)
Supplementary material 2 (DOCX 31 KB)


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Copyright information

© Springer Nature B.V. 2018

Authors and Affiliations

  1. 1.Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Provincial Key Laboratory of Applied Botany, South China Botanical GardenChinese Academy of SciencesGuangzhouPeople’s Republic of China
  2. 2.Plant Molecular Taxonomy, Department of BotanyLahore College for Women UniversityLahorePakistan

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