FT Florigen proteins in photoperiodic signaling: conservation and diversity in their regulation, structure and function - PubMed
4 hours ago
- #Photoperiod
- #Plant Development
- #Florigen
- FT Florigen proteins play a key role in photoperiod-induced flowering and other developmental processes like tuberization in potato and bud growth in trees.
- The regulation of FT proteins involves photoperiod-dependent transcription in leaf vasculature, movement into phloem sieve elements, and transport to the shoot apical meristem.
- FT proteins form transcriptional complexes with bZIP transcription factors and 14-3-3 proteins, with specific domains contributing to their function.
- Diverged FT paralogues and TERMINAL FLOWER 1 proteins act as negative regulators of FT activity, modulating developmental responses.
- A relay mechanism involving FT genes or related paralogues is described in cereals, tomato, Arabidopsis, and potato, sustaining photoperiod-induced developmental transitions.
- Unresolved questions in FT signaling and potential approaches to address them are discussed.