Tanshinone production and isoprenoid pathways in Salvia miltiorrhiza hairy roots induced by Ag+and yeast elicitor

Xiuchun Ge, Jianyong Wu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

144 Citations (Scopus)

Abstract

This work examined the accumulation of diterpenoid tanshinones and related secondary metabolism pathways in hairy root cultures of Salvia miltiorrhiza Bunge (Lamiacae) induced by a biotic elicitor, the carbohydrate fraction of yeast extract (YE, 100 μg mL-1), and an abiotic elicitor, Ag+(30 μM). The activity of 3-hydroxy-3-methylglutaryl CoA redutase (HMGR) was only stimulated by Ag+, and 1-deoxy-d-xylulose 5-phosphate synthase (DXS) was stimulated by both, but more strongly by YE. While the non-MVA pathway inhibitor fosmidomycin inhibited the tanshinone accumulation induced by both elicitors, the MVA-pathway inhibitor mevinolin only suppressed the Ag-induced tanshinone accumulation. The results suggest that the tanshinone accumulation induced by the two elicitors was mainly synthesized via the non-MVA pathway (DXS activity), but could depend on crosstalk between the MVA and non-MVA pathways. Furthermore, the pretreatment of hairy roots with Ag+for 24-48 h potentiated the YE-induced tanshinone production and DXS activity.
Original languageEnglish
Pages (from-to)487-491
Number of pages5
JournalPlant Science
Volume168
Issue number2
DOIs
Publication statusPublished - 1 Feb 2005

Keywords

  • Elicitors
  • Hairy root culture
  • Isoprenoid pathways
  • Salvia miltiorrhiza
  • Tanshinones

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Genetics
  • Plant Science

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