4.8 Article

Arabidopsis florigen FT binds to diurnally oscillating phospholipids that accelerate flowering

Journal

NATURE COMMUNICATIONS
Volume 5, Issue -, Pages -

Publisher

NATURE RESEARCH
DOI: 10.1038/ncomms4553

Keywords

-

Funding

  1. Alexander von Humboldt Fellowship
  2. Japan Science and Technology Agency
  3. PRESTO
  4. Institute of Plant and Microbial Biology
  5. Marie Curie Intra-European Fellowship for Career Development [PIEF-GA-2009-251839]

Ask authors/readers for more resources

Arabidopsis FT protein is a component of florigen, which transmits photoperiodic flowering signals from leaf companion cells to the shoot apex. Here, we show that FT specifically binds phosphatidylcholine ( PC) in vitro. A transgenic approach to increase PC levels in vivo in the shoot meristem accelerates flowering whereas reduced PC levels delay flowering, demonstrating that PC levels are correlated with flowering time. The early flowering is related to FT activity, because expression of FT-effector genes is increased in these plants. Simultaneous increase of FT and PC in the shoot apical meristem further stimulates flowering, whereas a loss of FT function leads to an attenuation of the effect of increased PC. Specific molecular species of PC oscillate diurnally, and night-dominant species are not the preferred ligands of FT. Elevating night-dominant species during the day delays flowering. We suggest that FT binds to diurnally changing molecular species of PC to promote flowering.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.8
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available