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. 2014 Aug 22;9(8):e105726. doi: 10.1371/journal.pone.0105726

Figure 11. Diagram of the transcriptional network regulating secondary wall biosynthesis in different secondary wall-forming cell types in Arabidopsis.

Figure 11

The results from this report add VND1 to VND5 on the list of secondary wall NAC master switches controlling secondary wall biosynthesis. SWNs expressed in various secondary wall-forming cell types activate the second-level MYB master switches and other downstream transcription factors, which together activate secondary wall biosynthetic genes and thereby lead to secondary wall deposition. SWNs also directly activate genes involved in programmed cell death during vessel formation.