PMID- 30875925 OWN - NLM STAT- MEDLINE DCOM- 20190703 LR - 20200225 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 20 IP - 6 DP - 2019 Mar 15 TI - Abscisic Acid Regulates the 3-Hydroxy-3-methylglutaryl CoA Reductase Gene Promoter and Ginsenoside Production in Panax quinquefolium Hairy Root Cultures. LID - 10.3390/ijms20061310 [doi] LID - 1310 AB - Panax quinquefolium hairy root cultures synthesize triterpenoid saponins named ginsenosides, that have multidirectional pharmacological activity. The first rate-limiting enzyme in the process of their biosynthesis is 3-hydroxy-3-methylglutaryl CoA reductase (HMGR). In this study, a 741 bp fragment of the P. quinquefolium HMGR gene (PqHMGR), consisting of a proximal promoter, 5'UTR (5' untranslated region) and 5'CDS (coding DNA sequence) was isolated. In silico analysis of an isolated fragment indicated a lack of tandem repeats, miRNA binding sites, and CpG/CpNpG elements. However, the proximal promoter contained potential cis-elements involved in the response to light, salicylic, and abscisic acid (ABA) that was represented by the motif ABRE (TACGTG). The functional significance of ABA on P. quinquefolium HMGR gene expression was evaluated, carrying out quantitative RT-PCR experiments at different ABA concentrations (0.1, 0.25, 0.5, and 1 mg.L(-1)). Additionally, the effect of abscisic acid and its time exposure on biomass and ginsenoside level in Panax quinquefolium hairy root was examined. The saponin content was determined using HPLC. The 28 day elicitation period with 1 mg.L(-1) ABA was the most efficient for Rg2 and Re (17.38 and 1.83 times increase, respectively) accumulation; however, the protopanaxadiol derivative content decreased in these conditions. FAU - Kochan, Ewa AU - Kochan E AUID- ORCID: 0000-0003-3316-2412 AD - Department of Pharmaceutical Biotechnology, Medical University of Lodz, Muszynskiego l, 90-151 Lodz, Poland. ewa.kochan@umed.lodz.pl. FAU - Balcerczak, Ewa AU - Balcerczak E AUID- ORCID: 0000-0001-5257-2914 AD - Laboratory of Molecular Diagnostics and Pharmacogenomics, Department of Pharmaceutical Biochemistry and Molecular Diagnostics, Interfaculty Cathedral of Laboratory and Molecular Diagnostics, Medical University of Lodz, Muszynskiego 1, 90-151 Lodz, Poland. ewa.balcerczak@umed.lodz.pl. FAU - Szymczyk, Piotr AU - Szymczyk P AUID- ORCID: 0000-0002-7688-4717 AD - Department of Pharmaceutical Biotechnology, Medical University of Lodz, Muszynskiego l, 90-151 Lodz, Poland. piotr.szymczyk@umed.lodz.pl. FAU - Sienkiewicz, Monika AU - Sienkiewicz M AD - Department of Allergology and Respiratory Rehabilitation, 2nd Chair of Otolaryngology, Medical University of Lodz, Zeligowskiego 7/9, 90-725, Lodz, Poland. monika.sienkiewicz@umed.lodz.pl. FAU - Zielinska-Blizniewska, Hanna AU - Zielinska-Blizniewska H AD - Department of Allergology and Respiratory Rehabilitation, 2nd Chair of Otolaryngology, Medical University of Lodz, Zeligowskiego 7/9, 90-725, Lodz, Poland. anna.zielinska-blizniewska@umed.lodz.pl. FAU - Szymanska, Grazyna AU - Szymanska G AUID- ORCID: 0000-0002-0025-7645 AD - Department of Pharmaceutical Biotechnology, Medical University of Lodz, Muszynskiego l, 90-151 Lodz, Poland. grazyna.szymanska@umed.lodz.pl. LA - eng GR - 502 13 771, 503/3-012-02/503-31/Uniwersytet Medyczny w Lodzi/ PT - Journal Article DEP - 20190315 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 RN - 0 (Ginsenosides) RN - 0 (Plant Proteins) RN - 72S9A8J5GW (Abscisic Acid) RN - EC 1.1.1.- (Hydroxymethylglutaryl CoA Reductases) SB - IM MH - Abscisic Acid/*pharmacology MH - Chromatography, High Pressure Liquid MH - Cloning, Molecular MH - Computer Simulation MH - Gene Expression Regulation, Plant/drug effects MH - Ginsenosides/analysis/*biosynthesis MH - Hydroxymethylglutaryl CoA Reductases/*genetics MH - Panax/drug effects/genetics/*metabolism MH - Plant Proteins/genetics MH - Plant Roots/drug effects/genetics/metabolism MH - *Promoter Regions, Genetic PMC - PMC6471273 OTO - NOTNLM OT - 3-hydroxy-3-methylglutaryl CoA reductase gene promoter OT - Panax quinquefolium OT - ginsenosides OT - hairy roots COIS- The authors declare no conflict of interest. EDAT- 2019/03/17 06:00 MHDA- 2019/07/04 06:00 PMCR- 2019/03/01 CRDT- 2019/03/17 06:00 PHST- 2019/02/13 00:00 [received] PHST- 2019/03/12 00:00 [revised] PHST- 2019/03/13 00:00 [accepted] PHST- 2019/03/17 06:00 [entrez] PHST- 2019/03/17 06:00 [pubmed] PHST- 2019/07/04 06:00 [medline] PHST- 2019/03/01 00:00 [pmc-release] AID - ijms20061310 [pii] AID - ijms-20-01310 [pii] AID - 10.3390/ijms20061310 [doi] PST - epublish SO - Int J Mol Sci. 2019 Mar 15;20(6):1310. doi: 10.3390/ijms20061310.