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The plant hormone ethylene promotes abiotic stress tolerance in the liverwort Marchantia polymorpha.

Bharadwaj, P. S., et al. · 2022 · Frontiers in Plant Science   research

doi:10.3389/fpls.2022.998267   PMID:36340412   PMC9632724

Linked genes (2)  2 core 0 peripheral

Gene ID Name Evidence / Role Function (this paper)
Mp8g15840 MpCTR1 experimental subject Single ortholog of the CTR1 protein kinase acting downstream of ethylene receptors; Mpctr1 mutants were tested across the same abiotic stresses. Mpctr1 plants showed stress resilience similar to or greater than wild type (e.g. no significant effect under mild salt), identifying MpCTR1 as a negative regulator of ethylene signaling.
Mp7g02640 MpEIN3 experimental subject Single ortholog of the EIN3 master transcription factor; Mpein3 loss-of-function mutants were assayed for heat, salt, nutrient-deficiency and far-red stress tolerance. Mpein3 plants were ethylene-insensitive and more sensitive than wild type (e.g. 77% growth inhibition at 29C vs ~47% for wild type), identifying MpEIN3 as a positive regulator promoting abiotic stress tolerance.