13CO2 labeling 1 Amino Acids 1 Arabidopsis 1 Arabidopsis thaliana 1 Article 1 Gas Chromatography-Mass Spectrometry 1 Isotope Labeling 1 Protein Biosynthesis 1 alanine 1 amino acid 1 amino acid analysis 1 biomass 1 carbon 13 1 carbon dioxide 13 1 gas chromatography time of flight mass spectrometry glucose 1 growth rate 1 isotope labeling 1 limit of quantitation 1 mass fragmentography 1 mass spectrometry 1 metabolism 1 nonhuman 1 plant growth 1 precipitation 1 protein 1 protein degradation 1 protein hydrolysis 1 protein synthesis 1 radioisotope 1