title: Expression of Terpenoid Biosynthetic Genes and Accumulation of Chemical Constituents in Valeriana fauriei.
abstract: Valeriana fauriei (V. fauriei), which emits a characteristic and unpleasant odor, is important in traditional medicine. In this study, the expression of terpenoid biosynthetic genes was investigated in different organs that were also screened for volatile compounds including valerenic acid and its derivatives. Specific expression patterns from different parts of V. fauriei were observed using quantitative real-time PCR (qRT-PCR). The highest transcript levels of biosynthetic genes involved in mevalonic acid (MVA) and methylerythritol phosphate (MEP) production were found in the stem. Although the amounts of volatile compounds were varied by organ, most of the volatile terpenoids were accumulated in the root. Gas chromatography mass spectrometry (GC-MS) analysis identified 128 volatile compounds, which represented 65.33% to 95.66% of total volatiles. Certain compounds were only found in specific organs. For example, isovalerenic acid and valerenic acid and its derivatives were restricted to the root. Organs with high transcript levels did not necessarily have high levels of the corresponding chemical constituents. According to these results, we hypothesize that translocation may occur between different organs in V. fauriei.
authors.affiliation: Department of Crop Science, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Korea. yunji0825@hanmail.net.
authors.forename: Yun Ji
authors.initials: YJ
authors.lastname: Park
authors.affiliation: Department of Botany and Microbiology, Addiriyah Chair for Environmental Studies, College of Science, King Saud University, P. O. Box 2455, Riyadh 11451, Saudi Arabia. mvalanarasu@gmail.com.
authors.forename: Mariadhas Valan
authors.initials: MV
authors.lastname: Arasu
authors.affiliation: Department of Botany and Microbiology, Addiriyah Chair for Environmental Studies, College of Science, King Saud University, P. O. Box 2455, Riyadh 11451, Saudi Arabia. naldhabi@ksu.edu.sa.
authors.forename: Naif Abdullah
authors.initials: NA
authors.lastname: Al-Dhabi
authors.affiliation: Department of Food and Nutrition and Institute of Natural Medicine, Hallym University, Chuncheon 200-702, Korea. limss@hallym.ac.kr.
authors.forename: Soon Sung
authors.initials: SS
authors.lastname: Lim
authors.affiliation: Department of Herbal Crop Research, National Institute of Horticultural and Herbal Science (NIHHS), Rural Development Administration (RDA), Bisanro 92, Eumseong, Chungbuk 369-873, Korea. yeondarabok@korea.kr.
authors.forename: Yeon Bok
authors.initials: YB
authors.lastname: Kim
authors.affiliation: Department of Herbal Crop Research, National Institute of Horticultural and Herbal Science (NIHHS), Rural Development Administration (RDA), Bisanro 92, Eumseong, Chungbuk 369-873, Korea. swlee1004@korea.kr.
authors.forename: Sang Won
authors.initials: SW
authors.lastname: Lee
authors.affiliation: Department of Crop Science, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Korea. supark@cnu.ac.kr.
authors.forename: Sang Un
authors.initials: SU
authors.lastname: Park
mesh_terms: D053898:Biosynthetic Pathways / Q000235:genetics*; D015971:Gene Expression Regulation, Enzymologic; D018506:Gene Expression Regulation, Plant; D007192:Indenes / Q000378:metabolism; D055432:Metabolomics / Q000379:methods; D012717:Sesquiterpenes / Q000378:metabolism; D013729:Terpenes / Q000737:chemistry / Q000378:metabolism*; D014158:Transcription, Genetic; D014632:Valerian / Q000737:chemistry / Q000235:genetics* / Q000378:metabolism*; D055549:Volatile Organic Compounds / Q000378:metabolism
chemical_list: D007192:Indenes; D012717:Sesquiterpenes; D013729:Terpenes; D055549:Volatile Organic Compounds; C037133:valerenic acid
keywords: Valeriana fauriei; gene expression; terpenoid; valerenic acid; volatile compounds