Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 442870
Title Temperature-dependent regulation of flowering by antagonistic FLM variants
Author(s) Posé, D.; Verhage, D.S.L.; Ott, F.; Yant, L.; Mathieu, J.; Angenent, G.C.; Immink, G.H.; Schmid, M.
Source Nature 503 (2013)7476. - ISSN 0028-0836 - p. 414 - 417.
DOI https://doi.org/10.1038/nature12633
Department(s) Laboratory of Molecular Biology
BIOS Plant Development Systems
EPS-1
Publication type Refereed Article in a scientific journal
Publication year 2013
Keyword(s) mads-box gene - arabidopsis-thaliana - transcription factor - circadian clock - functional-analysis - floral transition - identification - repressor - time - vernalization
Abstract The appropriate timing of flowering is crucial for plant reproductive success. It is therefore not surprising that intricate genetic networks have evolved to perceive and integrate both endogenous and environmental signals, such as carbohydrate and hormonal status, photoperiod and temperature1,2. In contrast to our detailed understanding of the vernalization pathway, little is known about how flowering time is controlled in response to changes in the ambient growth temperature. In Arabidopsis thaliana, the MADSbox transcription factor genesFLOWERING LOCUSM (FLM) and SHORTVEGETATIVEPHASE (SVP)have key roles in this process3,4. FLM is subject to temperature-dependent alternative splicing3. Here we report that the two mainFLMprotein splice variants,FLM-b and FLM-d, compete for interaction with the floral repressor SVP. The SVP–FLM-b complex is predominately formed at low temperatures and prevents precocious flowering. By contrast, the competingSVP–FLM-d complex is impaired in DNA binding and acts as a dominant-negative activator of flowering at higher temperatures. Our results show a new mechanism that controls the timing of the floral transition in response to changes in ambient temperature. A better understanding of how temperature controls the molecular mechanismsof flowering will be important to cope with current changes in global climate5,6.
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