LAUSR

Osmotic stresses like salinity and drought have deleterious effects on uptake and translocation of essential mineral nutrients. Iron (Fe) is an important micronutrient that regulates many processes in plants. Plants have adopted various molecular and physiological strategies for Fe acquisition from soil and transport to and within plants. Dynamic Fe signaling in plants tightly regulates iron uptake and homeostasis. This way, Fe nutrition is adjusted to growth and stress conditions, and Fe deficiency-regulated transcription factors such as FER-LIKE IRON DEFICIENCY-INDUCED TRANSCRIPTION FACTOR (FIT) act as regulatory hubs in these responses. Here, we review and analyze the expression of the various components of the Fe signaling during osmotic stresses. We discuss common players in the Fe and osmotic stress signaling. Furthermore, this review focuses on exploring a novel and exciting direct connection of regulatory mechanisms of Fe intake and acquisition with ABA-mediated environmental stress cues like salt/drought. We propose a model how environmental stress affects Fe uptake and acquisition and vice versa at molecular-physiological level in plants.