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. 2021 Feb 20;12(2):298. doi: 10.3390/genes12020298

Figure 3.

Figure 3

Signaling model involving AtbZIP62 transcription factor (TF) and more axillary branching (MAX), PIN-FORMED, gibberellic acid (GA), and isopentenyl transferase (IPT) encoded genes under drought stress. Upon drought stress induction, a variety of signals transduction and hormonal pathways are activated, followed by the induction of an array of drought-responsive genes, including transcription factors, such as AtbZIP62 which interact with other proteins or DNA to regulate the expression of stress inducible genes. As part of the drought response mechanism, plants activate ABA signaling components, which interact with other signaling pathways and specific genes in order to provide an appropriate response towards stress tolerance. Consequently, the regular plant growth-related metabolism is reduced. In the proposed signaling model, AtbZIP62 TF is shown to differentially regulate the transcripts accumulation of AtMAX1, AtMAX2, AtMAX3, AtMAX4 (SL), AtPIN1, AtPIN3, AtPIN7 (auxin carriers), AtGA2ox1, AtGA20ox1, AtGA20ox1, and AtRGA1, AtIPT5, and AtIPT7 (Cytokinin) genes. Arrows with continuous lines indicate positive regulation (of gene expression or induction of plant growth/shoot branching). Continuous lines with a perpendicular bar or an arrow suggest a negative regulation/inhibition or positive regulation/induction (of gene expression or plant growth/shoot branching) by our studies (current and previous). Dotted lines with a perpendicular bar or an arrow suggest a negative regulation/inhibition or positive regulation/induction (of gene expression or plant growth/shoot branching) by previous evidence by other research groups. NO, nitric oxide.