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. 2020 Dec 24;22(1):101. doi: 10.3390/ijms22010101

Figure 2.

Figure 2

Abscisic acid (ABA) and DELAY OF GERMINATION 1 (DOG1) signaling pathways in seeds. C encoded by ABI1 and ABI2 genes. The key elements of DOG1 signaling are heme molecule and PP2Cs encoded by AHG1 and AHG3 genes. Triplex complexes of PCAR-ABA-PP2C and/or DOG1-HEME-PP2C block the binding of PP2C to SnRK2. The active SnRK2 phosphorylates ABI3 and ABI5 which bind to the promoters (Pro) of ABA-controlled genes. In seeds, the parallel ABA and DOG1 signaling pathways activate synthesis of RFO, expression of LEA and HSP genes, thus regulating the onset of desiccation tolerance and transit to dormancy. Based on [34,60,82,87,97,98].