Abstract
Main conclusion
Taetr1-1 can promote enhanced seed dormancy and ethylene insensitivity in wheat, indicating a conserved function of ETR1 in regulating seed dormancy.
Abstract
Lots of wheat cultivars have weak dormant seed. Weak seed dormancy can cause pre-harvest sprouting (PHS) in grain which significantly reduces grain yield and quality. The mining of causal genes of PHS resistance will serve to enhance breeding selection and cultivar development. In a previous study in Arabidopsis, we identified reduced dormancy 3 as a loss-of-function mutant of the ethylene receptor 1 (ETR1), which can control seed dormancy through the ERF12–TPL–DOG1 pathway. However, it is unknown whether ETR1 also functions in the regulation of wheat seed dormancy. To identify the regulatory role of ETR1 in wheat, we cloned TaETR1 and overexpressed the gain-of-function mutant Taetr1-1. The result indicated that overexpression of Taetr1-1 can promote enhanced seed dormancy and ethylene insensitivity in wheat. This study contributed to our understanding of the molecular basis for the regulation of wheat PHS resistance.
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Data availability
All data generated during the current study are provided, in part, as supplementary material and are available from the corresponding author on reasonable request.
Abbreviations
- ACC:
-
1-Aminocyclop ropanecarboxylic acid
- ETR1:
-
Ethylene receptor 1
- PHS:
-
Pre-harvest sprouting
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Acknowledgements
This work was supported by the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant Nos. XDA24010104, XDA08010303) and The National Natural Science Foundation of China (Joint Fund Projects, U20A2033).
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Wei, J., Wu, Xt., Li, Xy. et al. Overexpression of Taetr1-1 promotes enhanced seed dormancy and ethylene insensitivity in wheat. Planta 258, 56 (2023). https://doi.org/10.1007/s00425-023-04211-2
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DOI: https://doi.org/10.1007/s00425-023-04211-2