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The molecular basis of vernalization: The central role of FLOWERING LOCUS C (FLC)

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Sheldon, C. C.·2000·Proceedings of the National Academy of Sciences

Abstract

In Arabidopsis, the MADS-box protein encoded by FLOWERING LOCUS C (FLC) is a repressor of flowering. Vernalization, which promotes flowering in the late-flowering ecotypes and many late-flowering mutants, decreases the level of FLC transcript and protein in the plant. This vernalization-induced reduction in FLC transcript levels is mitotically stable and occurs in all tissues. FLC activity is restored in each generation, as is the requirement of a low-temperature exposure for the promotion of flowering. The level of FLC determines the extent of the vernalization response in the promotion of flowering, and there is a quantitative relationship between the duration of cold treatment and the extent of down-regulation of FLC activity. We conclude that FLC is the central regulator of the induction of flowering by vernalization. Other vernalization-responsive late-flowering mutants, which are disrupted in genes that encode regulators of FLC, are late-flowering as a consequence of their elevated levels of FLC.

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Metadata

Authors
Sheldon, C. C.
Venue
Proceedings of the National Academy of Sciences
Published
2000-03-14
Volume
97
Issue
7
Pages
3753-3758
ISSN
0027-8424 (ISSN-L)
OpenAlex
W1967192654
Cited by
602
References
0
FWCI
44.67
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: The molecular basis of vernalization: The central role of FLOWERING LOCUS C (FLC). https://app.cochat.ai/papers/10.1073/pnas.060023597
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Sheldon, C. C. (2000). The molecular basis of vernalization: The central role of FLOWERING LOCUS C (FLC). Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.060023597

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