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

Pierre A. Pin,1,2 Reyes Benlloch,1 Dominique Bonnet,3 Elisabeth Wremerth-Weich,2
Thomas Kraft,2 Jan J. L. Gielen,3 Ove Nilsson1*

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.

等仔细看完后，再分析。

 

Antagonistic：反对的, 敌对的

Sugar Beet：糖用甜菜 Beta vulgaris ssp. vulgaris

 

 

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