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Elucidating the ancestral role of Class I HD-Zip transcription factors in land plants.

Romani F, Farías S, Rojas AC, Florent SN, Carella P, Schornack S, Bowman JL, Federici F, Moreno JE. · 2026 · Plant physiology   research

doi:10.1093/plphys/kiag217   PMID:41999039

Linked genes (1)  1 core 0 peripheral

Gene ID	Name	Evidence / Role	Function (this paper)
Mp3g02320	MpC1HDZ	experimental subject	MpC1HDZ is the sole Class I HD-Zip orthologue in M. polymorpha. Mpc1hdz loss-of-function mutants were more susceptible to Spodoptera frugiperda herbivory but more resistant to Phytophthora palmivora, and showed developmental defects (shortened gemma cups, reduced air pore density, absent surface papillae, loss of oil bodies), indicating a broad role for MpC1HDZ in epidermal cell differentiation and defense.