Transcriptional Regulation Under Low Oxygen Stress in Plants

摘要: Adaptations to low oxygen envision common strategies aimed at either optimizing energy production and consumption, or limiting the extent of oxidative stress reducing exposure oxygen. Coordination gene expression is essential achieve broad transcriptional reconfiguration that takes place in all organism subjected limitations. Recent discoveries have highlighted that, Arabidopsis, adjustments depletion are triggered by ethylene response factor (ERF) RAP2.12 being an oxygen-dependent proteolytic mechanism, can act like a bridge directly linking sensing regulation oxygen-responsive genes. This system bears some resemblance with well-known HIF pathway operating metazoans, which similarly involves post-translational stabilization master activator hypoxic expression. constitutively accumulated cell quickly relocated into nucleus upon hypoxia promote early responses. Several additional hypoxia-inducible transcription factors been identified plants, supposed regulate downstream responses: although their functions remain largely undetermined, them associated plant adaptations survival submergence, flooding, anoxic stresses. Information about interplay among different components regulatory network now required gain deeper understanding way plants able shape changing availability.