Fig. 7: Working model of the role of the TaPIR1–TaHRP1 cascade during Pst–wheat interaction. | Nature Communications

Fig. 7: Working model of the role of the TaPIR1–TaHRP1 cascade during Pst–wheat interaction.

From: The RING-finger ubiquitin E3 ligase TaPIR1 targets TaHRP1 for degradation to suppress chloroplast function

Fig. 7

The RING-finger ubiquitin E3 ligase TaPIR1 is translocated into the plant nucleus, where it interacts with and ubiquitinates the atypical transcription factor TaHRP1. TaPIR1–TaHRP1 interaction and modification promote TaHRP1 degradation and interfere with TaHRP1-induced PhANGs expression, resulting in attenuated chloroplast-derived ROS accumulation. In tapir1-AB plants, TaHRP1 accumulation activates PhANGs expression and induces ROS accumulation, which contributes to resistance to Pst in wheat.

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