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. 2020 Jan 14;182(3):1440–1453. doi: 10.1104/pp.19.01482

Figure 7.

Figure 7.

A proposed model for the two-way relationship between nitrate and ABA. When nitrate is resupplied after starvation, the transcription of TaANR1 is triggered. The products of TaANR1 are able to bind to the CArG motifs in the promoter of TaBG1 and activate its expression. TaBG1 can deconjugate ABA-GE, resulting in ABA accumulation. Then, the elevated ABA level causes an increase in TaWabi5 expression. TaWabi5 is capable of binding to the ABRE motifs in the promoter of root-type NRT2/NAR genes and activating their expression, thus leading to an acceleration in nitrate uptake.