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. 2017 Sep 21;8:1647. doi: 10.3389/fpls.2017.01647

FIGURE 6.

FIGURE 6

The influence of CBF-ox on auxin signaling pathway. For presumptive IAA biosynthesis pathways in plants, blue arrows indicate the tryptophan synthetic pathway in the chloroplast; a thin dashed black arrow denotes the tryptophan-independent IAA biosynthetic pathway; purple arrows indicate IPA biosynthetic pathway; red arrows indicate the indole alkaloid and serotonin biosynthetic pathway; green arrows indicate the Brassicaceae species-specific pathway. IAA transportation and signal transduction routes are also shown. Genes significantly changed in CBF2-ox or CBF3-ox plants are labeled by red stars.