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HFR1 delays dark-induced leaf senescence by suppressing ORE1 transcription and attenuating its protein activity.

Plant physiology - 6 Feb 2026

Sng Benny Jian Rong, Chin Hui Jun, Choi Ian Kin Yuen, Yang Xin, Van Vu Kien, Jang In-Cheol

Abstract excerpt

Leaf senescence is a complex physiological process that involves the gradual wilting and death of leaf tissue. While multiple transcription factors (TFs) contribute to this process, the NAC TF ORESARA1 (ORE1) plays a major role in leaf senescence in Arabidopsis (Arabidopsis thaliana). ORE1 is regulated by various upstream TFs, including PHYTOCHROME INTERACTING FACTOR5 (PIF5), which directly activates ORE1...

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PMID: 41632784
DOI: 10.1093/plphys/kiag049

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TF

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