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Fu J, Zhao Y, Zhou Y, Wang Y, Fei Z, Wang W, Wu J, Zhang F, Zhao Y, Li J, Hao J, Niu Y. MrERF039 transcription factor plays an active role in the cold response of Medicago ruthenica as a sugar molecular switch. Plant Cell Environ 2024; 47:1834-1851. [PMID: 38318779 DOI: 10.1111/pce.14845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 01/21/2024] [Accepted: 01/23/2024] [Indexed: 02/07/2024]
Abstract
Cold stress severely restricts plant development, causing significant agricultural losses. We found a critical transcription factor network in Medicago ruthenica was involved in plant adaptation to low-temperature. APETALA2/ethylene responsive factor (AP2/ERF) transcription factor MrERF039 was transcriptionally induced by cold stress in M. ruthenica. Overexpression of MrERF039 significantly increased the glucose and maltose content, thereby improving the tolerance of M. ruthenica. MrERF039 could bind to the DRE cis-acting element in the MrCAS15A promoter. Additionally, the methyl group of the 14th amino acid in MrERF039 was required for binding. Transcriptome analysis showed that MrERF039 acted as a sugar molecular switch, regulating numerous sugar transporters and sugar metabolism-related genes. In addition, we found that MrERF039 could directly regulate β-amylase gene, UDP glycosyltransferase gene, and C2H2 zinc finger protein gene expression. In conclusion, these findings suggest that high expression of MrERF039 can significantly improve the cold tolerance of M. ruthenica root tissues during cold acclimation. Our results provide a new theoretical basis and candidate genes for breeding new legume forage varieties with high resistance.
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Affiliation(s)
- Jiabin Fu
- Key Laboratory of Forage and Endemic Crop Biology, Ministry of Education, College of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Yanyun Zhao
- Key Laboratory of Forage and Endemic Crop Biology, Ministry of Education, College of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Yan Zhou
- Key Laboratory of Forage and Endemic Crop Biology, Ministry of Education, College of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Yu Wang
- Key Laboratory of Forage and Endemic Crop Biology, Ministry of Education, College of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Zhimin Fei
- Key Laboratory of Forage and Endemic Crop Biology, Ministry of Education, College of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Waner Wang
- Key Laboratory of Forage and Endemic Crop Biology, Ministry of Education, College of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Jiaming Wu
- Key Laboratory of Forage and Endemic Crop Biology, Ministry of Education, College of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Feng Zhang
- Key Laboratory of Forage and Endemic Crop Biology, Ministry of Education, College of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Yan Zhao
- Key Laboratory of Forage and Endemic Crop Biology, Ministry of Education, College of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Jiayu Li
- Key Laboratory of Forage and Endemic Crop Biology, Ministry of Education, College of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Jinfeng Hao
- Key Laboratory of Forage and Endemic Crop Biology, Ministry of Education, College of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Yiding Niu
- Key Laboratory of Forage and Endemic Crop Biology, Ministry of Education, College of Life Sciences, Inner Mongolia University, Hohhot, China
- Inner Mongolia Academy of Science and Technology, Hohhot, China
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