Abscisic acid regulates iron accumulation in plant seeds via the PYLs–bHLH IVc–YSLs module

Proceedings of the National Academy of Sciences, Volume 122, Issue 45, November 2025. <br/>SignificanceFe is essential for plant growth and human nutrition, yet its accumulation must be tightly regulated to avoid toxicity. We uncover a dual role of abscisic acid (ABA) in balancing seed Fe homeostasis: ABA inhibits Fe transport via the PYLs–bHLH …