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Metabolite fingerprinting and profiling in plants using NMR
P Krishnan1, N J Kruger, R G Ratcliffe
1Department of Plant Sciences, University of Oxford, South Parks Road, Oxford OX1 3RB, UK.
Journal of Experimental Botany
|November 3, 2004
Summary
Nuclear magnetic resonance (NMR) spectroscopy aids plant metabolomics through fingerprinting and profiling. While effective for sample comparison, its potential for metabolic network analysis and gene function discovery remains largely unexplored.
Area of Science:
- Plant science
- Metabolomics
- Spectroscopy
Background:
- Nuclear magnetic resonance (NMR) spectroscopy is a valuable tool for plant metabolite analysis, complementing mass spectrometry (MS).
- It enables both in vivo and in vitro analysis of plant metabolic composition.
Purpose of the Study:
- To review the applications of 1H NMR spectroscopy in plant metabolomics.
- To highlight the potential of NMR for understanding metabolic networks and gene function.
Main Methods:
- Metabolite fingerprinting: Multivariate analysis of unassigned 1H NMR spectra for comparing plant groups and stress impacts.
- Metabolite profiling: Assignment of 1H NMR spectra to identify and quantify metabolites in plant extracts.
Main Results:
- NMR fingerprinting effectively discriminates between sample groups and identifies key spectral regions.
- Metabolite profiling allows for the identification of 20-40 metabolites and comparison of concentrations between samples.
- Both methods generate a metabolic phenotype for plants.
Conclusions:
- 1H NMR spectroscopy is a powerful tool for plant metabolomics, facilitating sample classification and hypothesis generation.
- Current applications focus on data accumulation and sample comparison, underutilizing NMR's potential for probing metabolic networks and functional genomics.