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The ELF4 gene controls circadian rhythms and flowering time in Arabidopsis thaliana

Author

Listed:
  • Mark R. Doyle

    (University of Wisconsin-Madison)

  • Seth J. Davis

    (University of Warwick)

  • Ruth M. Bastow

    (University of Warwick
    John Innes Centre)

  • Harriet G. McWatters

    (University of Warwick)

  • László Kozma-Bognár

    (Biological Research Center)

  • Ferenc Nagy

    (Biological Research Center)

  • Andrew J. Millar

    (University of Warwick)

  • Richard M. Amasino

    (University of Wisconsin-Madison)

Abstract

Many plants use day length as an environmental cue to ensure proper timing of the switch from vegetative to reproductive growth. Day-length sensing involves an interaction between the relative length of day and night, and endogenous rhythms that are controlled by the plant circadian clock1. Thus, plants with defects in circadian regulation cannot properly regulate the timing of the floral transition2. Here we describe the gene EARLY FLOWERING 4 (ELF4), which is involved in photoperiod perception and circadian regulation. ELF4 promotes clock accuracy and is required for sustained rhythms in the absence of daily light/dark cycles. elf4 mutants show attenuated expression of CIRCADIAN CLOCK ASSOCIATED 1 (CCA1), a gene that is thought to function as a central oscillator component3,4. In addition, elf4 plants transiently show output rhythms with highly variable period lengths before becoming arrhythmic. Mutations in elf4 result in early flowering in non-inductive photoperiods, which is probably caused by elevated amounts of CONSTANS (CO), a gene that promotes floral induction5.

Suggested Citation

  • Mark R. Doyle & Seth J. Davis & Ruth M. Bastow & Harriet G. McWatters & László Kozma-Bognár & Ferenc Nagy & Andrew J. Millar & Richard M. Amasino, 2002. "The ELF4 gene controls circadian rhythms and flowering time in Arabidopsis thaliana," Nature, Nature, vol. 419(6902), pages 74-77, September.
    • Handle: RePEc:nat:nature:v:419:y:2002:i:6902:d:10.1038_nature00954
    DOI: 10.1038/nature00954
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    Cited by:

    1. Mathias Foo & Declan G Bates & Ozgur E Akman, 2020. "A simplified modelling framework facilitates more complex representations of plant circadian clocks," PLOS Computational Biology, Public Library of Science, vol. 16(3), pages 1-34, March.
    2. Mark Greenwood & Mirela Domijan & Peter D Gould & Anthony J W Hall & James C W Locke, 2019. "Coordinated circadian timing through the integration of local inputs in Arabidopsis thaliana," PLOS Biology, Public Library of Science, vol. 17(8), pages 1-31, August.

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