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Ectopic, but not endogenous, expression of the transcription factor gene MpSETA disrupts epidermal tissue formation in Marchantia polymorpha.

Moriya KC, Kono H, Lu YT, Loue-Manifel J, Oka Y, Matsushita T, Honjo MN, Ishizaki K, Kudoh H, Goodrich J, Shimada T. · 2026 · Journal of experimental botany   research

doi:10.1093/jxb/erag024   PMID:41556130

Linked genes (4)  4 core 0 peripheral

Gene ID	Name	Evidence / Role	Function (this paper)
Mp4g04920	MpICE2	experimental subject	A bHLH transcription factor (also called MpSCRM2) that heterodimerizes with MpSETA. Inducing MpSETA in the Mpice2 mutant background partially alleviated the ectopic phenotypes, indicating the defects are mediated in part by MpSETA-MpICE2 heterodimers.
—	MpSCRM2 missing	experimental subject	Alias of MpICE2, the bHLH partner of MpSETA examined via the Mpice2 mutant background.
Mp2g04160	MpSETA	experimental subject	A bHLH transcription factor (also called MpSMF). Constitutive/steroid-inducible ectopic MpSETA expression in thalli caused air pore/air chamber defects, ectopic pegged rhizoids, and thallus dwarfism, while Mpseta knockouts showed no obvious thallus defect and MpSETA was not detected in wild-type thallus, indicating its native role is mainly in diploid sporophyte (seta) development.
—	MpSMF missing	experimental subject	Alias of MpSETA, the bHLH transcription factor whose ectopic expression disrupts epidermal tissue formation in this study.