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Significance Ethylene is an important plant hormone that is essential for many physiological and developmental processes such as apical hook formation, shoot and root growth, root nodulation, flower senescence, abscission, and fruit ripening. Transcriptional activation in the ethylene response has been well studied. However, the transcriptional repression in the ethylene response remains unclear. Here, by combined approaches of data analysis, molecular biology, and genetics, we found that a transcriptional repressor TREE1 interacts with EIN3 to regulate transcriptional repression, leading to an inhibition of shoot growth in response to ethylene. Our work provides insight into how the transcriptional activator can be tuned to repress downstream gene expression in hormone signals.

TREE1-EIN3–mediated transcriptional repression inhibits shoot growth in response to ethylene