title: Transition metals: a double edge sward in ROS generation and signaling.
abstract: Transition metals such as Iron (Fe) and Copper (Cu) are essential for plant cell development. At the same time, due their capability to generate hydroxyl radicals they can be potentially toxic to plant metabolism. Recent works on hydroxyl-radical activation of ion transporters suggest that hydroxyl radicals generated by transition metals could play an important role in plant growth and adaptation to imbalanced environments. In this mini-review, the relation between transition metals uptake and utilization and oxidative stress-activated ion transport in plant cells is analyzed, and a new model depicting both apoplastic and cytosolic mode of ROS signaling to plasma membrane transporters is suggested.
authors: LINV; Plant, Soil & Environmental Science; University of Firenze; Viale delle idee; Sesto Fiorentino (FI), Italy.
authors: Ana
authors: A
authors: Rodrigo-Moreno
authors: Charlotte
authors: C
authors: Poschenrieder
authors: Sergey
authors: S
authors: Shabala
mesh_terms: D000222:Adaptation, Physiological; D002462:Cell Membrane / Q000378:metabolism; D003600:Cytosol / Q000378:metabolism; D017665:Hydroxyl Radical / Q000378:metabolism*; D017136:Ion Transport; D018384:Oxidative Stress; D010944:Plants / Q000378:metabolism*; D015398:Signal Transduction; D014131:Trace Elements / Q000378:metabolism*; D028561:Transition Elements / Q000378:metabolism*
chemical_list: D014131:Trace Elements; D028561:Transition Elements; D017665:Hydroxyl Radical
keywords: adaptation; calcium; copper; development; hydroxyl radicals; iron; membrane transport; oxidative stress; potassium; toxicity