2.8 Statistical analysis
The statistical analysis of LC-MS profiling data was performed with MetaboAnalyst 5.0 tool (Chong et al., 2019). Differences in anthocyanin levels among the light treatments were analyzed by one-way ANOVA followed by Turkey’s post-hoc test. Statistically significant differences between the light treatments analyzed by qRT-PCR were determined by independent samples t- test in SPSS Statistics program v26 (IBM corporation, New York, NY, USA). Pearson’s correlation matrices were used to visualize the statistical relationship from correlation coefficients between selected gene expression levels and dominant anthocyanin concentrations (delphinidin 3-galactoside and delphinidin 3-arabinoside) with p-value set to <0.05. ANOVA and Pearson’s correlation analysis were performed using Origin Pro software v2020b (Origin Lab Corporation, Northampton, MA, USA).