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. 2008 Nov 13;103(4):609–623. doi: 10.1093/aob/mcn227

Fig. 2.

Fig. 2.

Transcriptional network of abiotic stress responses. Transcription factors are shown in ovals. Transcription factor-modifying enzymes are shown in circles. The small triangles correspond to post-translational modifications. Blue squares with question marks represent putative MYC ICE1-like transcription factors that may activate CBF1/DREB1B and CBF2/DREB1C. The green boxes represent the cis-elements present in stress-responsive genes. The green boxes with question marks represent putative cis-elements on the promoter of stress-responsive genes. The black dot corresponds to the sumoylation modification by SIZ1 of the ICE1 transcription factor. The dashed black line from SIZ1 to HOS1 represents competition for binding places on the ICE1 transcription factor. SIZ1 blocks the access of HOS1 to the ubiquitination sites on the ICE1. CBF4/DREB1D is a DRE cis-element binding factor that is ABA dependent.