Flow of information in the root cell as a function of the angular frequency of ethylene oscillations. (a) Ethylene input at low frequency, (b) Ethylene input at high frequency. The process of ERF1 activation can clearly discriminate between the different modes of ethylene action. Both panels were calculated using the full version of the model presented in  (see Table 2 and Additional file 1).
Díaz and Alvarez-Buylla BMC Systems Biology 2009 3:48 doi:10.1186/1752-0509-3-48