Fig. 6From: Simultaneous untargeted and targeted metabolomics profiling of underivatized primary metabolites in sulfur-deficient barley by ultra-high performance liquid chromatography-quadrupole/time-of-flight mass spectrometryTargeted quantification of identified biomarkers. a GSSG in roots and leaves. b Citrate and aspartate in roots. c Asparagine and arginine in rootsBack to article page