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Both phytochrome A and phyB interact with PHYTOCHROME-INTERACTING FACTORs through an evolutionary conserved phy-APA interaction.

Jeong J, Lee Y, Choi G. · 2025 · Nature communications   research

doi:10.1038/s41467-025-59327-8   PMID:40287465   PMC12033333

Linked genes (2)  2 core 0 peripheral

Gene ID	Name	Evidence / Role	Function (this paper)
Mp2g16090	MpPHY	experimental subject	The single Marchantia polymorpha phytochrome (Mp-phy/MpPHY) was tested by yeast two-hybrid and in vitro binding assays. Mp-phy interacted with Mp-PIF in a red-light-dependent manner and with Arabidopsis PIF3, with its output module (Mp-phyOPM) mediating the APA-dependent interaction, demonstrating evolutionary conservation of the phy-APA interaction.
Mp3g17350	MpPIF	experimental subject	The Marchantia polymorpha PHYTOCHROME-INTERACTING FACTOR (Mp-PIF/MpPIF) was shown by yeast two-hybrid assays to bind Mp-phy and Arabidopsis phyA/phyB output modules under red light via its APA motif; the mutated Mp-PIFmAPA lost interaction, supporting a conserved phy-APA binding mechanism.