Transition metals: A double edge sward in ROS generation and signaling |
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Authors: | Ana Rodrigo-Moreno Charlotte Poschenrieder Sergey Shabala |
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Affiliation: | 1.LINV; Plant, Soil & Environmental Science; University of Firenze; Viale delle idee; Sesto Fiorentino (FI), Italy;2.Fisiología Vegetal; Facultad de Biociencias; Universidad Autónoma de Barcelona; Bellaterra, Spain;3.School of Agricultural Sciences; University of Tasmania; Hobart, TAS Australia |
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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. |
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Keywords: | copper iron membrane transport potassium calcium hydroxyl radicals oxidative stress toxicity adaptation development |
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