Intracellular signaling by diffusion: can waves of hydrogen peroxide transmit intracellular information in plant cells?

The epidermal cells are also often the first cells to confront invading pathogens, where ROS production is an early response, so it may be significant that it is also in these cells that the transmission of information from the PM by ROS diffusion would be more likely to take place because of a lower background concentration of H 2 O 2 .

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