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. 2021 Aug 4;11(8):1153. doi: 10.3390/biom11081153

Figure 1.

Figure 1

Interplay between IAA, auxinic herbicides, ethylene, and ABA. Adapted from [3,5]. The scheme on the regulation of free IAA by different possibilities takes specifically the synthesis of conjugates by GH3 amino acid conjugate synthetases into account. High auxin could induce gene expression of ethylene and ABA synthesis genes, leading to the events in the green boxes, which ultimately damage the plant.