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. 2016 Dec 16;7:1884. doi: 10.3389/fpls.2016.01884

FIGURE 2.

FIGURE 2

Regulatory genes that control ABI5 expression. ABI5 (ABA INSENSITIVE5) is positively regulated by the ABI5 protein thus ensuring a positive feedback loop in ABA signaling. DOG1 (DELAY OF GERMINATION 1) and MYB96 also exert a positive effect on ABI5 expression during germination and lateral root formation, respectively. A higher activity of ABI5 leads to the inhibition of germination, post-germination growth and lateral root formation (A). A group of regulators such as PED3 (PEROXISOME DEFECTIVE 3), SAG (SENSITIVITY TO ABA DURING GERMINATION), RAV1 (RELATED TO ABI3/VP1), and MYB7 downregulate ABI5 expression during seed germination. MYB7 also negatively regulates lateral root formation. WRKY18 (WRKY DNA-BINDING PROTEIN18), WRKY40, WRKY60 and SAG repress ABI5 and enable post-germination growth (B).