Group VII ethylene response factors forming distinct regulatory loops mediate submergence responses.
| Autor: | Hsiao PY; Agricultural Biotechnology Research Center, Academia Sinica, Taipei 115, Taiwan., Zeng CY; Agricultural Biotechnology Research Center, Academia Sinica, Taipei 115, Taiwan., Shih MC; Agricultural Biotechnology Research Center, Academia Sinica, Taipei 115, Taiwan. |
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| Jazyk: | angličtina |
| Zdroj: | Plant physiology [Plant Physiol] 2024 Feb 29; Vol. 194 (3), pp. 1745-1763. |
| DOI: | 10.1093/plphys/kiad547 |
| Abstrakt: | Group VII ethylene response factors (ERFVIIs), whose stability is oxygen concentration-dependent, play key roles in regulating hypoxia response genes in Arabidopsis (Arabidopsis thaliana) and rice (Oryza sativa) during submergence. To understand the evolution of flooding tolerance in cereal crops, we evaluated whether Brachypodium distachyon ERFVII genes (BdERFVIIs) are related to submergence tolerance. We found that three BdERFVIIs, BdERF108, BdERF018, and BdERF961, form a feedback regulatory loop to mediate downstream responses. BdERF108 and BdERF018 activated the expression of BdERF961 and PHYTOGLOBIN 1 (PGB1), which promoted nitric oxide turnover and preserved ERFVII protein stability. The activation of PGB1 was subsequently counteracted by increased BdERF961 accumulation through negative feedback regulation. Interestingly, we found that OsERF67, the orthologue of BdERF961 in rice, activated PHYTOGLOBIN (OsHB2) expression and formed distinct regulatory loops during submergence. Overall, the divergent regulatory mechanisms exhibited by orthologs collectively offer perspectives for the development of submergence-tolerant crops. Competing Interests: Conflict of interest statement. None declared. (© The Author(s) 2023. Published by Oxford University Press on behalf of American Society of Plant Biologists.) |
| Databáze: | MEDLINE |
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