Transcription factor PIF4 controls the thermosensory activation of flowering
AuthorsKumar, S. Vinod
Jaeger, Katja E.
Harberd, Nicholas P.
Wigge, Philip A.
KAUST Grant NumberKUK-I1-002-03
Permanent link to this recordhttp://hdl.handle.net/10754/600055
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AbstractPlant growth and development are strongly affected by small differences in temperature. Current climate change has already altered global plant phenology and distribution, and projected increases in temperature pose a significant challenge to agriculture. Despite the important role of temperature on plant development, the underlying pathways are unknown. It has previously been shown that thermal acceleration of flowering is dependent on the florigen, FLOWERING LOCUS T (FT). How this occurs is, however, not understood, because the major pathway known to upregulate FT, the photoperiod pathway, is not required for thermal acceleration of flowering. Here we demonstrate a direct mechanism by which increasing temperature causes the bHLH transcription factor PHYTOCHROME INTERACTING FACTOR4 (PIF4) to activate FT. Our findings provide a new understanding of how plants control their timing of reproduction in response to temperature. Flowering time is an important trait in crops as well as affecting the life cycles of pollinator species. A molecular understanding of how temperature affects flowering will be important for mitigating the effects of climate change. © 2012 Macmillan Publishers Limited. All rights reserved.
CitationKumar SV, Lucyshyn D, Jaeger KE, Alós E, Alvey E, et al. (2012) Transcription factor PIF4 controls the thermosensory activation of flowering. Nature 484: 242–245. Available: http://dx.doi.org/10.1038/nature10928.
SponsorsWe thank S. Prat, C. Fankhauser, K. Franklin, K. Goto, G. Coupland and D. Weigel for seeds. We are grateful to members of the Wigge laboratory for discussions. This work was supported in part by award No. KUK-I1-002-03 (to N.P.H.) made by King Abdullah University of Science and Technology and a Biotechnology and Biological Sciences Research Council (BBSRC) grant BB/I019022/1 (to S.V.K.). D.L. was supported by an Erwin Schroedinger Fellowship from the Austrian Science Fund FWF. P.A.W. was supported by start-up funds from the John Innes Centre and BBSRC, a BBSRC grant (BB/D0100470/1) and a European Research Council Starting Grant (ERC 243140).
CollectionsPublications Acknowledging KAUST Support
- The time of day effects of warm temperature on flowering time involve PIF4 and PIF5.
- Authors: Thines BC, Youn Y, Duarte MI, Harmon FG
- Issue date: 2014 Mar
- Photoperiodic and thermosensory pathways interact through CONSTANS to promote flowering at high temperature under short days.
- Authors: Fernández V, Takahashi Y, Le Gourrierec J, Coupland G
- Issue date: 2016 Jun
- Phytochrome-interacting factor 4 and 5 (PIF4 and PIF5) activate the homeobox ATHB2 and auxin-inducible IAA29 genes in the coincidence mechanism underlying photoperiodic control of plant growth of Arabidopsis thaliana.
- Authors: Kunihiro A, Yamashino T, Nakamichi N, Niwa Y, Nakanishi H, Mizuno T
- Issue date: 2011 Aug
- Gibberellic acid signaling is required for ambient temperature-mediated induction of flowering in Arabidopsis thaliana.
- Authors: Galvão VC, Collani S, Horrer D, Schmid M
- Issue date: 2015 Dec
- The control of flowering in time and space.
- Authors: Jaeger KE, Graf A, Wigge PA
- Issue date: 2006