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Profiling Methods to Identify Cold-Regulated Primary Metabolites Using Gas Chromatography Coupled to Mass Spectrometry

Protocol
Part of the Methods in Molecular Biology book series (MIMB, volume 1166)

Abstract

This book chapter describes the analytical procedures required for the profiling of a metabolite fraction enriched for primary metabolites. The profiling is based on routine gas chromatography coupled to mass spectrometry (GC-MS). The generic profiling method is adapted to plant material, specifically to the analysis of single leaves from plants that were exposed to temperature stress experiments. The described method is modular. The modules include a rapid sampling and metabolic inactivation protocol for samples in a wide size range, a sample extraction procedure, a chemical derivatization step that is required to make the metabolite fraction amenable to gas chromatographic analysis, a routine GC-MS method, and finally the procedures of data processing and data mining. A basic and extendable set of standardizations for metabolite recovery and retention index alignment of the resulting GC-MS chromatograms is included. The method has two applications: (1) the rapid screening for changes of relative metabolite pools sizes under temperature stress and (2) the verification of cold-regulated metabolites by exact quantification using a GC-MS protocol with extended internal and external standardization.

Key words

Gas chromatography Time-of-flight mass spectrometry GC-MS TOF-MS Metabolomics Metabolite profiling Metabolism Relative quantification Absolute quantification 

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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  1. 1.Max-Planck-Institute of Molecular Plant Physiology, Applied Metabolome Analysis Research GroupPotsdamGermany

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