Enhancement of valerenic acid production in Valeriana officinalis roots bymethyl jasmonate-mediated transcriptional changes of sesquiterpene synthasegenes

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TAHERI HENGAMEH; GHESMATI MANSOUR

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Journal: IRANIAN JOURNAL OF PLANT PHYSIOLOGY Year:2018 | Volume:8 | Issue:3 Page(s): 2487-2492

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Title

Enhancement of valerenic acid production in Valeriana officinalis roots bymethyl jasmonate-mediated transcriptional changes of sesquiterpene synthasegenes

Author(s)

TAHERI HENGAMEH | GHESMATI MANSOUR | Issue Writer Certificate

Keywords

Valeriana officinalisQ1

Sesquiterpenes synthaseQ1

Expression patternQ1

Quantitative real time PCRQ1

Abstract

Valeriana officinalis (valerian), as a nutraceutical herb, is widely used for its sedative and hypnotic properties. It is known that C15 sesquiterpenoid valerenic acid (VA) is active ingredient responsible for pharmacologicaleffects of V. officinalis. To evaluate the effect of methyl jasmonate (MeJA) concentrations (50 and 100 μ M)in the modulation of Expression patterns of the genes involved in valerenic acid (VA) biosynthesis, transcriptabundance of the identified sesquiterpene synthase (Sesqui-TPS) genes in the root of V. officinalis wasmonitored by Quantitative real time PCR (qRT-PCR) within a 144 h time period. In addition, valerenic acidcontents were measured by high-performance liquid chromatography (HPLC). The highest amount of VA(12. 45 mg/g dry weight (DW)) was found at 100 μ M MeJA with a 12 fold increase over control culture (1. 03mg/g DW) at exposure time of 72 h. Moreover, MeJA in a concentration dependent manner, enhancedtranscription rate of VoTPS1 and VoTPS7 genes. Accordingly, exposure to 100 μ M MeJA for 24 h can be moreeffective on induction of these genes than observed for 50 μ M. Such enhancement correlated with increasedVA accumulation suggesting that these genes may be responsible for the biosynthesis of intermediatesinvolved in the VA-biosynthetic pathway. However, MeJA treatment seemed to have a less significant effecton VoTPS3 expression than VoTPS1 and VoTPS7 genes. These results provide insights for more effectivebiosynthesis of VA by MeJA-mediated transcriptional changes of putative sesqui-TPS.

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APA: Copy

TAHERI, HENGAMEH, & GHESMATI, MANSOUR. (2018). Enhancement of valerenic acid production in Valeriana officinalis roots bymethyl jasmonate-mediated transcriptional changes of sesquiterpene synthasegenes. IRANIAN JOURNAL OF PLANT PHYSIOLOGY, 8(3 ), 2487-2492. SID. https://sid.ir/paper/259027/en

Vancouver: Copy

TAHERI HENGAMEH, GHESMATI MANSOUR. Enhancement of valerenic acid production in Valeriana officinalis roots bymethyl jasmonate-mediated transcriptional changes of sesquiterpene synthasegenes. IRANIAN JOURNAL OF PLANT PHYSIOLOGY[Internet]. 2018;8(3 ):2487-2492. Available from: https://sid.ir/paper/259027/en

IEEE: Copy

HENGAMEH TAHERI, and MANSOUR GHESMATI, “Enhancement of valerenic acid production in Valeriana officinalis roots bymethyl jasmonate-mediated transcriptional changes of sesquiterpene synthasegenes,” IRANIAN JOURNAL OF PLANT PHYSIOLOGY, vol. 8, no. 3 , pp. 2487–2492, 2018, [Online]. Available: https://sid.ir/paper/259027/en

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