Figure S1. Example of query information for abscisic acid (ABA) in the small molecule liquid chromatography–mass spectrometry/mass spectrometry (LC–MS/MS) database that was established for this project. In (a), the search parameters are displayed including: compound name, molecular weight and molecular weight range, and CAS no. The standard output in (b) includes the MS/MS fragmentation spectra, the exact molecular weight, the formula, the CAS no., the MRM transition, the electrospray ionization (ESI) parameters of declustering potential (DP) and collision energy (CE) and the retention time (Rt) if the same conditions and material for the LC separation are used. A double click on the MS/MS fragmentation spectra will provide a high-resolution picture.

Table S1. List of 86 compounds for which maize xylem sap was analysed for using liquid chromatography–mass spectrometry/mass spectrometry (LC–MS/MS).

Table S2. Concentration range of standards for compounds analysed in xylem sap using four independent MRM methods. R2 provides an indication of the linearity of the standard curves. Asterisk indicates the concentration of the compound shown was the limit of detection.

PCE_1770_sm_Figure_S1.pdf42KSupporting info item
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