PubMed · 2026-03-26
Scientists discovered how wheat controls its own height by identifying a protein called RNHL1 that acts as a molecular coordinator between two plant hormones, ethylene and gibberellin. This finding reveals a new layer of regulation in wheat growth that could be targeted to breed shorter, sturdier wheat crops.
The protein RNHL1 undergoes liquid-liquid phase separation — forming droplet-like clusters inside cells — to coordinate the interaction between ethylene and gibberellin signaling pathways in wheat.
RNHL1 acts as a molecular bridge between the two hormone pathways, with its phase-separated state being essential for this coordinating function in regulating plant height.
Disruption of RNHL1 function alters wheat plant height, establishing it as a potential target for breeding programs aimed at producing semi-dwarf, lodging-resistant wheat varieties.
