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Photoreceptor Regulation of CONSTANS Protein in Photoperiodic Flowering
Open accessAbstract
Many plants flower in response to seasonal fluctuations in day length. The CONSTANS ( CO ) gene of Arabidopsis promotes flowering in long days. Flowering is induced when CO messenger RNA expression coincides with the exposure of plants to light. However, how this promotes CO activity is unknown. We show that light stabilizes nuclear CO protein in the evening, whereas in the morning or in darkness the protein is degraded by the proteasome. Photoreceptors regulate CO stability and act antagonistically to generate daily rhythms in CO abundance. This layer of regulation refines the circadian rhythm in CO messenger RNA and is central to the mechanism by which day length controls flowering.
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Citations
Cited by
The genetic basis of flowering responses to seasonal cues
Andrés, F., & Coupland, G. (2012) · Nature Reviews Genetics · doi:10.1038/nrg3291 · Cited by 1,538
Self-citationSeasonal and developmental timing of flowering
Amasino, R. (2010) · The Plant Journal · doi:10.1111/j.1365-313x.2010.04148.x · Cited by 894
Phytochrome Signaling Mechanisms
Li, J., Li, G., Wang, H., & Wang Deng, X. (2011) · The Arabidopsis Book · doi:10.1199/tab.0148 · Cited by 561
Decoding of Light Signals by Plant Phytochromes and Their Interacting Proteins
Bae, G., & Choi, G. (2008) · Annual Review of Plant Biology · doi:10.1146/annurev.arplant.59.032607.092859 · Cited by 490
AUXIN RESPONSE FACTOR 2 (ARF2): a pleiotropic developmental regulator
Okushima, Y., Mitina, I., Quach, H. L., & Theologis, A. (2005) · The Plant Journal · doi:10.1111/j.1365-313x.2005.02426.x · Cited by 398
Metadata
- Authors
- Valverde, F., Mouradov, A., Soppe, W., Ravenscroft, D., Samach, A., & Coupland, G.
- Venue
- Science
- Published
- 2004-02-13
- Volume
- 303
- Issue
- 5660
- Pages
- 1003-1006
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2017126312
- Cited by
- 1,309
- References
- 0
- FWCI
- 79.47
- Type
- journal article
- Language
- en
- Open access
- green
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- Valverde, F., Mouradov, A., Soppe, W., Ravenscroft, D., Samach, A., & Coupland, G. (2004). Photoreceptor Regulation of CONSTANS Protein in Photoperiodic Flowering. Science. https://doi.org/10.1126/science.1091761
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