Fig. 7: Working model of auxin signaling involving miR408-5p regulation in rice. | Nature Communications

Fig. 7: Working model of auxin signaling involving miR408-5p regulation in rice.

From: Switching action modes of miR408-5p mediates auxin signaling in rice

Fig. 7: Working model of auxin signaling involving miR408-5p regulation in rice.The alternative text for this image may have been generated using AI.

Compared with that in low auxin environment, rice in high auxin condition represses miR156 and promotes more association of IPA1 with MIR408 cis-element to trigger higher accumulations of mature miR408-5p, thereby leading to switch miR408-5p action from translation repression to mRNA cleavage. In addition to a higher contribution from canonical receptor-mediated auxin signaling, more robust regulation of IAA30 by miR408-5p in rice through mRNA cleavage results in an enhanced auxin response in a high than in a low auxin environment.

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