An Antagonistic Pair of FT Homologs Mediates the Control of Flowering Time in Sugar Beet

被引：368

作者：

Pin, Pierre A. ^{[1
,2
]}

Benlloch, Reyes ^{[1
]}

Bonnet, Dominique ^{[3
]}

Wremerth-Weich, Elisabeth ^{[2
]}

Kraft, Thomas ^{[2
]}

Gielen, Jan J. L. ^{[3
]}

Nilsson, Ove ^{[1
]}

机构：

[1] Swedish Univ Agr Sci, Dept Forest Genet & Plant Physiol, Umea Plant Sci Ctr, S-90183 Umea, Sweden

[2] Syngenta Seeds AB, S-26123 Landskrona, Sweden

[3] Syngenta Seeds SAS, F-31790 St Sauveur, France

来源：

SCIENCE | 2010年 / 330卷 / 6009期

基金：

瑞典研究理事会;

关键词：

ANNUAL HABIT; LOCUS-T; VERNALIZATION; REPRESSOR; GENE; ARABIDOPSIS;

D O I：

10.1126/science.1197004

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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.

引用

页码：1397 / 1400

页数：4

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