Molecular basis of flowering under natural long-day conditions in Arabidopsis.
- Song YH Department of Biology, University of Washington, Seattle, WA, USA. younghsong@ajou.ac.kr.
- Kubota A Department of Biology, University of Washington, Seattle, WA, USA.
- Kwon MS Department of Biology, University of Washington, Seattle, WA, USA.
- Covington MF Amaryllis Nucleics, Oakland, CA, USA.
- Lee N Department of Biology, University of Washington, Seattle, WA, USA.
- Taagen ER Department of Biology, University of Washington, Seattle, WA, USA.
- Laboy Cintrón D Department of Biology, University of Washington, Seattle, WA, USA.
- Hwang DY Department of Life Sciences, Ajou University, Suwon, Korea.
- Akiyama R Department of Evolutionary Biology and Environmental Studies, University of Zurich, Zürich, Switzerland.
- Hodge SK School of Biological Sciences and SynthSys, University of Edinburgh, Edinburgh, UK.
- Huang H Donald Danforth Plant Science Center, St. Louis, MO, USA.
- Nguyen NH Department of Biology, University of Washington, Seattle, WA, USA.
- Nusinow DA Donald Danforth Plant Science Center, St. Louis, MO, USA.
- Millar AJ School of Biological Sciences and SynthSys, University of Edinburgh, Edinburgh, UK.
- Shimizu KK Department of Evolutionary Biology and Environmental Studies, University of Zurich, Zürich, Switzerland.
- Imaizumi T Department of Biology, University of Washington, Seattle, WA, USA. takato@uw.edu.
- 2018-09-26
Published in:
- Nature plants. - 2018
Arabidopsis
Arabidopsis Proteins
DNA-Binding Proteins
Flowers
Gene Expression Regulation, Plant
Light
Photoperiod
Phytochrome A
Time Factors
Transcription Factors
English
Plants sense light and temperature changes to regulate flowering time. Here, we show that expression of the Arabidopsis florigen gene, FLOWERING LOCUS T (FT), peaks in the morning during spring, a different pattern than we observe in the laboratory. Providing our laboratory growth conditions with a red/far-red light ratio similar to open-field conditions and daily temperature oscillation is sufficient to mimic the FT expression and flowering time in natural long days. Under the adjusted growth conditions, key light signalling components, such as phytochrome A and EARLY FLOWERING 3, play important roles in morning FT expression. These conditions stabilize CONSTANS protein, a major FT activator, in the morning, which is probably a critical mechanism for photoperiodic flowering in nature. Refining the parameters of our standard growth conditions to more precisely mimic plant responses in nature can provide a powerful method for improving our understanding of seasonal response.
- Language
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- English
- Open access status
- green
- Identifiers
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- DOI 10.1038/s41477-018-0253-3
- PMID 30250277
- Persistent URL
- https://sonar.ch/global/documents/47436
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