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PMID: 21127254 Published · ppublish English Journal Article Research Support, Non-U.S. Gov't

An antagonistic pair of FT homologs mediates the control of flowering time in sugar beet.

Science (New York, N.Y.) ·Vol. 330 ·No. 6009 ·2010-12-03 ·Pages 1397-400

Pin PA, Benlloch R, Bonnet D, Wremerth-Weich E, Kraft T, Gielen JJ, Nilsson O

Abstract

Cultivated beets (Beta vulgaris ssp. vulgaris) are unable to form reproductive shoots during the first year of their life cycle. Flowering only occurs if plants get vernalized, that is, pass through the winter, and are subsequently exposed to an increasing day length (photoperiod) in spring. Here, we show that the regulation of flowering time in beets is controlled by the interplay of two paralogs of the FLOWERING LOCUS T (FT) gene in Arabidopsis that have evolved antagonistic functions. BvFT2 is functionally conserved with FT and essential for flowering. In contrast, BvFT1 represses flowering and its down-regulation is crucial for the vernalization response in beets. These data suggest that the beet has evolved a different strategy relative to Arabidopsis and cereals to regulate vernalization.

MeSH Terms

Amaranthaceae/genetics,growth & development Arabidopsis Proteins/genetics,metabolism Beta vulgaris/genetics,growth & development Cold Temperature Flowers/growth & development Gene Expression Regulation, Plant Genes, Plant Models, Biological Molecular Sequence Data Phenotype Plant Proteins/chemistry,metabolism Plants, Genetically Modified RNA Interference Seasons

Chemicals

Arabidopsis Proteins FT protein, Arabidopsis Plant Proteins

Authors & Affiliations

7 authors, click to expand affiliations / ORCID

Pin Pierre A

Umeå Plant Science Centre, Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, 901-83 Umeå, Sweden.

Benlloch Reyes

Bonnet Dominique

Wremerth-Weich Elisabeth

Kraft Thomas

Gielen Jan J L

Nilsson Ove

Article Info

Journal

Science (New York, N.Y.)

Abbr.

Science

ISSN

1095-9203

DOI

10.1126/science.1197004

Published

2010-12-03

Pages

1397-400

Language

English

Region

United States

NLM ID

0404511

Subset

Databases

GENBANK

HM448909, HM448910, HM448911, HM448912, HM448913, HM448914, HM448915, HM448916, HM448917, HM448918, HQ148107, HQ148108, HQ148109, HQ148110, HQ148111, HQ148112, HQ148113, HQ148114, HQ148115, HQ148116, HQ148117, HQ148118, HQ148119, HQ148120, HQ148121, HQ148122, HQ148123, HQ148124, HQ148125, HQ148126, HQ148127, HQ148128, HQ148129, HQ148130, HQ148131, HQ148132

External Links

PubMed source DOI: 10.1126/science.1197004 View journal details

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An antagonistic pair of FT homologs mediates the control of flowering time in sugar beet.

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