Hairy root cultures of Panax vietnamensis, a promising approach for the production of ocotillol-type ginsenosides

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• 作者：Loan Thi Ha ; Nathalie Pawlicki-Jullian…
• 刊名：Plant Cell, Tissue and Organ Culture
• 出版年：2016
• 出版时间：July 2016
• 年：2016
• 卷：126
• 期：1
• 页码：93-103
• 全文大小：1,160 KB
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Life Sciences
  Plant Sciences
  Plant Physiology
  
• 出版者：Springer Netherlands
• ISSN：1573-5044
• 卷排序：126

文摘

Panax vietnamensis Ha et Grushv. is an important source of majonoside R2, a dammarane saponin with an ocotillol side-chain, which is an interesting pharmacological active compound. Thirty-one transformed root lines were obtained after the inoculation of in vitro shoot explants of P. vietnamensis with Rhizobium rhizogenes ATCC 15834 strain. The transgenic nature of the hairy roots was confirmed by PCR amplification. The established hairy root lines displayed four morphological phenotypes when cultured on hormone-free medium. Most of the cultures showed the characteristic traits of hairy roots with primary roots, an extensive lateral branching and rapid growth. Kinetic growth of these hairy root lines was measured for 90 days and a biomass production of about 10 g L−1 fresh weight was obtained. The ginsenoside content of hairy roots was identified by LC–MS and compared with that of 6 year-old rhizomes of P. vietnamensis. Majonoside R2 was recovered in trace amounts, but other ocotillol saponins, pseudoginsenoside F11 and vinaginsenoside R1, were recovered in larger proportions. These results indicate that hairy roots of P. vietnamensis present an interesting potential to produce ginsenosides and, in particular, ocotillol saponins.KeywordsPanax vietnamensisTransformed rootsRhizobium rhizogenes 15834Ocotillol saponins