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A schematic of the auxin signaling pathway. ARFs and Aux/IAAs function as positive and negative regulators in the auxin signaling pathway. In response to cellular and environmental signals, auxin is biosynthesized and the auxin promotes E3 ligase complex-mediated proteolysis of Aux/IAAs. The degradation leads to the release of ARFs and the activation of auxin response. Ub and ARGs indicate ubiquitin and auxin-responsive genes, respectively.
