Article Dans Une Revue Nature Communications Année : 2014

Arabidopsis florigen FT binds to diurnally oscillating phospholipids that accelerate flowering.

Résumé

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.

Fichier principal
Vignette du fichier
Nakamura et al_2014_1.pdf (763.08 Ko) Télécharger le fichier
Origine Fichiers éditeurs autorisés sur une archive ouverte
Licence
Loading...

Dates et versions

hal-01606583 , version 1 (27-05-2020)

Licence

Identifiants

Citer

Yuki Nakamura, Fernando Andrés, Kazue Kanehara, Yu-Chi Liu, Peter Dörmann, et al.. Arabidopsis florigen FT binds to diurnally oscillating phospholipids that accelerate flowering.. Nature Communications, 2014, 5, ⟨10.1038/ncomms4553⟩. ⟨hal-01606583⟩
127 Consultations
117 Téléchargements

Altmetric

Partager

  • More