Possible role of polyphosphatases in yeast sensitivity to DCS-1800 electromagnetic fields

Resumo

The ability of living organisms to perceive electromagnetic radiation is one of the most intriguing issues that concern the fundamental problem of interaction of living matter with the factors of physical nature. Polyphosphates can be possible receptors. The purpose of the study was to evaluate the role of the polyphosphatases PPN1 and PPX1 in the cell response to exposure to electromagnetic fields (EMFs) of 1871 MHz that were generated by DCS-1800 base stations. Six-week exposure at energy flux densities of 0.1–10 W/m² was used. The corresponding values of specific adsorption rate (SAR) were 0.0075–1.5 W/kg. Electromagnetic radiation was found to lead to the impairment of a number of physiological and metabolic functions of cells, change their resistance to antibiotics, and result in irreversible changes in their genome. Low doses of the EMF caused the strongest biological responses. It was demonstrated that the deficiency in the ppn1 and ppx1 genes made the strains less adaptive, which resulted in an increase in their sensitivity to EMF exposure. Both polyphosphatases PPN1 and PPX1 were shown to be necessary for the normal cell response to the nonionizing electromagnetic radiation of 1871 MHz.