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PHYTOCHROME-INTERACTING FACTOR 3 represses plant salt tolerance through MADS-box transcription factor AGAMOUS-LIKE 21

Yiyi Zhang1,2, Xixian Feng1,2, Zhongping Liu1

  • 1Key Laboratory of Bio-resource and Eco-environment of Ministry of Education , Laboratory for Ex Situ Conservation and Resource Utilization of Montane Plants, College of Life Sciences, Sichuan University, Chengdu 610064, China.

Journal of Experimental Botany
|July 27, 2026
PubMed
Summary

PHYTOCHROME-INTERACTING FACTOR 3 (PIF3) negatively impacts plant salt tolerance. Light-activated PHYTOCHROME B (PHYB) degrades PIF3, reducing its negative effects and enhancing plant salt tolerance by restoring redox homeostasis.

Keywords:
AGL21PHYBPIF3Salt stressredox homeostasistranscriptional regulation

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