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Updated: Aug 20, 2026

Application of Genetically Encoded Fluorescent Nitric Oxide (NO•) Probes, the geNOps, for Real-time Imaging of NO• Signals in Single Cells
Published on: March 16, 2017
Nitric oxide and iron in plants: an emerging and converging story
Magdalena Graziano1, Lorenzo Lamattina
1Instituto de Investigaciones Biológicas, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, CC 1245, 7600 Mar del Plata, Argentina.
Abstract:
Although iron is plentiful, it exists primarily in its insoluble form and is therefore not freely available to plants. Thus, complex strategies involving chelators, production of reductive agents, reductase activities, proton-mediated processes, specialized storage proteins, and others, act in concert to mobilize iron from the environment into the plant and within the plant. Because of its fundamental role in plant productivity and ultimately in human nutrition, several unsolved and central questions concerning sensing, trafficking, homeostasis and delivery of iron in plants are currently a matter of intense debate. Here, we discuss some recent studies focusing on iron nutrition in plants as well as evidence from iron homeostasis in animals and propose a new scenario involving the formation of nitric oxide and iron-nitrosyl complexes as part of the dynamic network that governs plant iron homeostasis.
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