Abstract
(Abstract) We made the method for Arabidopsis metabolome analysis based on direct-infusion Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR/MS) (IonSpec). This method was sufficiently applied to metabolic phenotyping of Arabidopsis. This method is simple in that after homogenizing samples, powdered samples are dissolved in extraction solvents (acetone and methanol) to 20% fresh weight/volume. Extracted sample solutions are dried and dissolved in 50% (v/v) acetonitrile. Mass analysis using FT-ICR/MS (IonSpec) is performed in positive and negative ionization operation modes. Mass spectra are acquired over the 100-1,000 m/z range and accumulated to improve the S/N ratio.
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