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. 2016 Mar 22;7:356. doi: 10.3389/fpls.2016.00356

FIGURE 1.

FIGURE 1

Illustration of the transcriptional and hormonal regulation of vascular development. (A) Hormonal and transcriptional control of vascular procambium initiation. (B) Regulation of vascular procambium proliferation, xylem differentiation, and vascular patterning by peptide TDIF (red dots in the phloem) signaling. A cross section of the Arabidopsis stem to demonstrate cell types is shown on the left. The localization of different components of the TDIF signaling pathways is illustrated on the right. Abbreviations for gene names are specified in the text.