Ethylene signaling of hypoxic stress adaptation in Arabidopsis

• Applicant: Professorin Dr. Margret Sauter (†)
• Subject Area: Plant Physiology
• Term: from 2011 to 2018
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 211162206

• Final Report Year: 2018

Final Report Abstract

In summary, we have used the model plant Arabidopsis to study root responses to hypoxia and identified several novel adaptations, primary root bending and lateral root development, that have evolved to cope with hypoxia. We were able to elucidate to some extend the molecular mechanism that drive these adaptations. The primary root bends via altered auxin distribution. LR development is controlled by ABA and both responses are balanced by the antagonistic activities of an ERF-independent hypoxia signaling pathway and by an ERFVII-dependent pathway. ERFVII-independent hypoxia signaling opens up a new field in hypoxia research.

Publications

• (2017) Root bending is antagonistically affected by hypoxia and ERF-mediated transcription via auxin signaling. Plant Physiology 175: 412-423
  Eysholdt-Derzsó E, Sauter M
  (See online at https://doi.org/10.1104/pp.17.00555)