Figure 3. Three polyacetylenes were identified as biomarkers for red SCs in A. lancea. (A-D) Pair-wise comparisons of different SC types using OPLS-DA model plots (n=6). (E-H) VIP plot showing the differential metabolites in compared samples (VIP ≥ 1). (I) Venn diagram showing the three differential metabolites associated with the red secretory cavities. (J) Quantification of atractylodin in different SC types. Six biological replicates were used for the analysis. Error bars indicate SEM. Significant differences were determined using a one-way ANOVA of independent samples and a~d means significant differences between different groups.