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. 2023 Jul 11;14:1192371. doi: 10.3389/fpls.2023.1192371

Figure 3.

Figure 3

Correlation plot acting in the flavonoid (A) and lignin (B) biosynthesis pathways during adventitious root (AR) formation in cuttings propagated from Platycladus orientalis donors at different ages. Pearson’s correlation coefficient (PCC) between flavonoid and phenylpropanoid biosynthesis pathway differentially accumulated metabolites (DAMs) versus the expression levels of differentially expressed proteins (DEPs). The PCC and significances (*p < 0.05) are presented in a symmetric matrix, and a heatmap is used to indicate the strength of correlation among the variables. Red and blue squares indicate positive and negative correlations, respectively. p-Values of one-way ANOVA of data are indicated as follows: *p < 0.05, **p < 0.01, and ***p < 0.001. Protein name abbreviations: CSF7, chalcone synthase 7; CHI, chalcone-flavonone isomerase; FHT, naringenin,2-oxoglutarate 3-dioxygenase; IRL, isoflavone reductase-like protein; CHI, chalcone–flavonone isomerase; DFR, bifunctional dihydroflavonol 4-reductase; PNC1, cationic peroxidase SPC4; PER12, peroxidase 12; PER1, 1-Cys peroxiredoxin A; PAL, phenylalanine ammonia-lyase; PER4, peroxidase 4; PER12, peroxidase 12.