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RESEARCH PRODUCT
Dynamics of Monoterpene Formation in Spike Lavender Plants
Isabel Mendoza-poudereuxClaudia HuberJuan SeguraWolfgang EisenreichIsabel ArrillagaErika Kutznersubject
0106 biological sciences0301 basic medicineLavenderEndocrinology Diabetes and MetabolismMonoterpeneLavandula latifolialcsh:QR1-502Reductase01 natural sciencesBiochemistryArticlelcsh:Microbiologylaw.inventionessential oils; isotopologue profiling; lamiaceae; <i>Lavandula latifolia</i>; spike lavender; terpenoid biosynthesis; mevalonate; CO<sub>2</sub>terpenoid biosynthesislamiaceae03 medical and health sciencesCamphorchemistry.chemical_compoundmevalonatelawMolecular Biologyessential oilsEssential oilchemistry.chemical_classificationbiologyChemistrybiology.organism_classificationddc:spike lavender030104 developmental biologyEnzymeisotopologue profilingBiochemistryLamiaceaeCO2Lavandula latifolia010606 plant biology & botanydescription
The metabolic cross-talk between the mevalonate (MVA) and the methylerythritol phosphate (MEP) pathways was analyzed in spike lavender (Lavandula latifolia Med) on the basis of 13CO2-labelling experiments using wildtype and transgenic plants overexpressing the 3-hydroxy-3-methylglutaryl CoA reductase (HMGR), the first and key enzyme of the MVA pathway. The plants were labelled in the presence of 13CO2 in a gas chamber for controlled pulse and chase periods of time. GC/MS and NMR analysis of 1,8-cineole and camphor, the major monoterpenes present in their essential oil, indicated that the C5-precursors, isopentenyl diphosphate (IPP) and dimethylallyl diphosphate (DMAPP) of both monoterpenes are predominantly biosynthesized via the MEP pathway. Surprisingly, overexpression of HMGR did not have significant impact upon the crosstalk between the MVA and MEP pathways indicating that the MEP route is the preferred pathway for the synthesis of C5 monoterpene precursors in spike lavender.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-12-19 | Metabolites |