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GA-independent DELLA regulation by inositol pyrophosphate in a nonvascular land plant.

Rana P, Edathil Kadangodan A, Koley P, Ghosh R, Pullagurla NJ, Naik HC, Mondal P, Gayen S, Laha D. · 2025 · Nature chemical biology   research

doi:10.1038/s41589-025-01961-w   PMID:40745478

Linked genes (3)  2 core 1 peripheral

Gene ID Name Evidence / Role Function (this paper)
Mp5g20660 MpGRAS6 experimental subject DELLA growth repressor; MpVIH-derived InsP8 binds MpDELLA, promoting its polyubiquitination and proteasomal degradation, revealing GA-independent DELLA regulation by inositol pyrophosphate. A binding-site mutant (MpDELLA-K294A/R295A) abolishes InsP8 binding.
Mp8g06840 MpVIH experimental subject Diphosphoinositol-pentakisphosphate kinase responsible for synthesizing the inositol pyrophosphate messenger InsP8; MpVIH-derived InsP8 controls MpDELLA stability (validated by MpVIH-KD constructs, BiFC and docking).
MpBES1 missing citation background Cited as a BES1/BZR1-family transcription factor that regulates cell division and differentiation in M. polymorpha.