COOPERATIVE RESPONSE OF ESCHERICHIA-COLI-CELLS TO THE RESONANCE EFFECT OF MILLIMETER WAVES AT SUPER LOW-INTENSITY

Cells of Escherichia coli K12 AB1157 were irradiated with millimeter w aves (MMW) within the power density (PD) range of 10(-20) to 10(-4) W/ cm(2). MMW were applied for 0.5-70 min at 51.76 GHz or 41.32 GHz at wh ich, as had been shown earlier, MMW resonantly changes the genome conf ormational state (GCS) of E. coli K12 AB1157 cells. The changes in the GCS were tested with the method of anomalous viscosity time dependenc e (AVTD). It was demonstrated that the resonance effect of MMW manifes ts itself at PD up to 10(-19) W/cm(2). Dependences of MMW effect on po wer density and time of exposure proved to have distinct characteristi cs when cells are irradiated during the logarithmic or stationary phas es of the culture's growth. It was found that the resonance effect of MMW on the GCS of E. coli cells at the early stationary phase changes the developmental dynamics of the irradiated culture. It was establish ed for the first time that the magnitude of the resonance MMW effect d epends on the concentration of irradiated cells. An analysis of the re sults indicates an electromagnetic rather than diffusion nature of the cells' cooperative responses to millimeter waves.