Figure 1.

Transcriptional networks involved in cell reprogramming during regeneration. (a) Hormone-induced shoot organogenesis. (b) De novo root formation after root-tip excision. Positive (wounding, callus-inducing medium (CIM), auxin, etc.) and negative (low O₂, aging, etc.) signals are shown in blue and red, respectively. Transcriptional and epigenetic regulators (Table 1) are depicted inside boxes of different colors. Each color represents a given DNA binding domain (see main text for legends). White arrows indicate direct upregulation via promoter binding.