Abstract
Introduction
Camelina sativa is a Brassicaceae with interesting agronomic potential and is considered an alternative oilseed crop. Currently, Camelina is grown mainly for its seed, which shows a high oil content with an unusual fatty acid profile particularly rich in polyunsaturated fatty acids. Camelina seeds contain other potentially valuable compounds and their composition is now relatively well described. However, little information is available on the accumulation dynamics of these compounds during seed development.
Objectives
Our aim is to describe the dynamics of metabolites accumulation during C. sativa seed development.
Methods
After purification by HPLC, the fractions were analyzed by LC–MS and NMR to characterize new compounds. The dynamic of metabolites accumulation during seed development was monitored during 15, 25 and 35 days after flowering, and metabolic profilings were performed by LC–MS and GC–MS.
Results
This study describes for the first time two compounds (quercetin-5b-O-sinapyl-2″-O-apiosyl-3-O-rutinoside and epicatechin-7-O-glucose) that have not previously been identified in the seeds of C. sativa. We also show the accumulation kinetics of various metabolites involved in seed development. These investigations highlight a major reorganization of the metabolome with a depletion of the content of most primary metabolites and a high accumulation of most fatty acids, glucosinolates, flavonoids and sinapic acid derivatives.
Conclusion
This study resulted in the metabolic profile of C. sativa during seed development and enabled to identify two novel compounds in Camelina seeds.
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Acknowledgements
This work was performed, in partnership with the SAS PIVERT, within the framework of the French Institute for Energy Transition (“Institut pour la Transition Energétique”—ITE) P.I.V.E.R.T. (www.institut-pivert.com < http://www.institut-pivert.com>) selected as an Investment for the Future (“Investissements d’Avenir”). This work was supported, as part of Investments for the Future, by the French Government under the reference ANR-001-01. The European Regional Development Fund (equipment acquired) is gratefully acknowledged.
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Supplementary material 1
Summary table of LC-MS analysis. Supplementary material 1 (XLSX 15 kb)
Supplementary material 2
NMR analysis for quercetin-5b-O-sinapyl-2′′-O-apiosyl-3-O-rutinoside. Supplementary material 2 (DOCX 1033 kb)
Supplementary material 3
NMR analysis for epicatechin-7-O-glucose. Supplementary material 3 (DOCX 1083 kb)
Supplementary material 4
Supplementary material 4 (XLSX 10 kb)
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Quéro, A., Molinié, R., Mathiron, D. et al. Metabolite profiling of developing Camelina sativa seeds. Metabolomics 12, 186 (2016). https://doi.org/10.1007/s11306-016-1135-1
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DOI: https://doi.org/10.1007/s11306-016-1135-1