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MOTHER OF FT AND TFL1 Regulates Seed Germination through a Negative Feedback Loop Modulating ABA Signaling in Arabidopsis
Open accessAbstract
Abscisic acid (ABA) and gibberellin (GA) are two antagonistic phytohormones that regulate seed germination in response to biotic and abiotic environmental stresses. We demonstrate here that MOTHER OF FT AND TFL1 (MFT), which encodes a phosphatidylethanolamine-binding protein, regulates seed germination via the ABA and GA signaling pathways in Arabidopsis thaliana. MFT is specifically induced in the radical-hypocotyl transition zone of the embryo in response to ABA, and mft loss-of-function mutants show hypersensitivity to ABA in seed germination. In germinating seeds, MFT expression is directly regulated by ABA-INSENSITIVE3 (ABI3) and ABI5, two key transcription factors in ABA signaling pathway. MFT is also upregulated by DELLA proteins in the GA signaling pathway. MFT in turn provides negative feedback regulation of ABA signaling by directly repressing ABI5. We conclude that during seed germination, MFT promotes embryo growth by constituting a negative feedback loop in the ABA signaling pathway.
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Citations
Cited by
First off the mark: early seed germination
Weitbrecht, K., Müller, K., & Leubner-Metzger, G. (2011) · Journal of Experimental Botany · doi:10.1093/jxb/err030 · Cited by 842
Molecular mechanisms of seed dormancy
GRAEBER, K., NAKABAYASHI, K., MIATTON, E., LEUBNER‐METZGER, G., & SOPPE, W. J. J. (2012) · Plant, Cell & Environment · doi:10.1111/j.1365-3040.2012.02542.x · Cited by 640
Skubacz, A., Daszkowska-Golec, A., & Szarejko, I. (2016) · Frontiers in Plant Science · doi:10.3389/fpls.2016.01884 · Cited by 499
Regulation of Seed Germination and Abiotic Stresses by Gibberellins and Abscisic Acid
Vishal, B., & Kumar, P. P. (2018) · Frontiers in Plant Science · doi:10.3389/fpls.2018.00838 · Cited by 348
Evolution of the PEBP Gene Family in Plants: Functional Diversification in Seed Plant Evolution
Karlgren, A., Gyllenstrand, N., Källman, T., Sundström, J. F., Moore, D., Lascoux, M., & Lagercrantz, U. (2011) · Plant Physiology · doi:10.1104/pp.111.176206 · Cited by 337
Metadata
- Authors
- Xi, W., Liu, C., Hou, X., & Yu, H.
- Venue
- The Plant Cell
- Publisher
- Oxford University Press (OUP)
- Published
- 2010-06-01
- Volume
- 22
- Issue
- 6
- Pages
- 1733-1748
- ISSN
- 1040-4651 (ISSN-L)
- 1532-298X
- OpenAlex
- W2133124877
- Cited by
- 376
- References
- 0
- FWCI
- 17.83
- Type
- journal article
- Language
- en
- Open access
- green
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- Xi, W., Liu, C., Hou, X., & Yu, H. (2010). MOTHER OF FT AND TFL1 Regulates Seed Germination through a Negative Feedback Loop Modulating ABA Signaling in Arabidopsis. The Plant Cell. https://doi.org/10.1105/tpc.109.073072
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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