flowering-genetics
Flowering genetics is the study of the genetic and molecular mechanisms that control when and how plants transition from vegetative growth to reproductive flowering. Understanding these pathways—including the roles of photoperiod, temperature, and key regulatory genes—is essential for deciphering how plants time reproduction to environmental cues. This knowledge has broad implications for crop improvement, climate adaptation research, and conservation of plant species sensitive to seasonal changes.
PubMed · 2026-04-01
Scientists used gene-editing to discover how two key genes control when and where a perennial alpine plant flowers, revealing that the same genetic pathway plays surprisingly different roles depending on which branch of the plant is growing.
Knocking out the CONSTANS gene delayed flowering under long days but still allowed side branches to flower, while knocking out FT/TSFL genes blocked flowering on side branches entirely.
Both genes are required together for the plant to form inflorescence branches and flowers on its main shoot under long-day conditions.
After cold exposure (vernalization), plants missing FT/TSFL could still produce a few flowers, suggesting a secondary pathway partially compensates for the loss of these genes.
