The samples used for the metabolomics assay were consistent with the transcriptome, both being P. ternata leaves. Using an ACQUITY UPLC ® HSS T3 (2.1 150 mm, 1.8 m) (Waters, Milford, MA, USA) chromatographic column, the Thermo Vanquish (Thermo Fisher Scientific, USA) ultra-high performance liquid phase system operates at a flow rate of 0.25 mL/min, a column temperature of 40°C, and an injection volume of 2 µL (Liu et al., 2020b (link); Fu et al., 2021 (link)).
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