Hydrogen peroxide mediates plant root cell response to nutrient deprivation.

@article{Shin2004HydrogenPM,
  title={Hydrogen peroxide mediates plant root cell response to nutrient deprivation.},
  author={Ryoung Shin and Daniel P Schachtman},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  year={2004},
  volume={101 23},
  pages={8827-32}
}
Potassium (K(+)) is an essential nutrient required by plants in large quantities, but changes in soil concentrations may limit K(+) acquisition by roots. It is not known how plant root cells sense or signal the changes that occur after the onset of K(+) deficiency. Changes in the kinetics of Rb(+) uptake in Arabidopsis roots occur within 6 h after K(+) deprivation. Reactive oxygen species (ROS) and ethylene increased when the plants were deprived of K(+). ROS accumulated in a discrete region of… CONTINUE READING
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