Research outcomes

The antagonism between TFL1 and the florigen "FT" relies on competition for access to chromatin bound by their partner FD at the LFY locus.

During my stay in the US, I examined the role of the LEAFY (LFY) gene on flower development. Previous our studies showed that LFY expression is activated by phytohormone auxin (Yamaguchi et al., 2013 Dev Cell; Wu and Yamaguchi e-life). However, how LFY is repressed is not understood. In this study, we identified TERMINAL FLOWER1(TFL1) as a repressor of LFY. The antagonism between TFL1 and the florigen "FT" relies on competition for access to chromatin bound by their partner FD at the LFY locus and other shared targets. The combined data reveals how TFL1 and TF tune flower formation in response to seasonal cues by altering transcriptional programs. 

Resource

https://www.nature.com/articles/s41467-020-18782-1

Plant Stem Cell Regulation and Floral Patterning

https://bsw3.naist.jp/ito/

( October 15, 2020 )

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