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. 2020 Nov 27;11:589326. doi: 10.3389/fgene.2020.589326

FIGURE 6.

FIGURE 6

Environmental factors may trigger the activation of TFs to control the expression of flavonoid-related structural genes. (A) The co-expression network between TFs (blue circles) and flavonoid-related structural genes (red circles). The circle size is positively correlated with the connectivity of genes in the regulatory network. (B) The correlation analysis between environmental factors and the expression of TF genes. The red and blue square indicate positive and negative correlations between specific rows and columns, respectively. Climate factors include sunshine duration (SD), relative humidity (Hum), air pressure (Press), average temperature (Tave), minimum temperature (Tmin), and maximum temperature (Tmax). (C) Cis-regulatory elements analysis of TF genes.