FLOWERING LOCUS T genes MtFTb1 and MtFTb2 act redundantly to promote flowering under long days in Medicago truncatula
Authors: Perez Santangelo, S., Macknight, R. C.
Date: 2025-12-17 · Version: 1
DOI: 10.64898/2025.12.15.694442 Category: Plant Biology
Model Organism: Medicago truncatula
▶ AI Summary
The study identifies MtFTb1 and MtFTb2 as essential, redundant regulators of long‑day flowering in the legume Medicago truncatula, demonstrating that they are required for up‑regulating MtFTa1 under vernalised long‑day conditions. Using CRISPR/Cas9‑generated single and double mutants, the authors show that double mutants are specifically delayed in flowering under long days while retaining vernalization responsiveness, and transcriptomic analyses reveal that MtFTb1/2 activate MADS‑box genes and other flowering regulators.
flowering time FT genes Medicago truncatula CRISPR/Cas9 long‑day photoperiod