Journal of Global Ecology and Environment

This review be points to the investigations concerning the effects of magnetic fields (MFs) on microorganisms e.g. bacteria and fungi. Those exerted by weak DC and low-frequency/low-intensity AC MFs. At the first of the nineteenth century, the physical mutagenesis e.g. radiation, hot/cold, electrical field (EF), magnetic field (MF). etc., were inspired for enhancing or modifying their biological behavior. The MF was used to study their influences on all living cells. While most applications were upon bacteria as prokaryotes and yeast (Saccharomyces cerevisiae (S.c), used as a model of eukaryotes. So, the various studies since 1990 have been appeared that low intensity of MF possess the brightness side for regulating biological systems. The low intensity of MF (0.01 ‹ T›1.0) was so effect that it decreased the cell population or inhibited the growth. While the exposure the S.c to high intensity was increased cell population within 1.5 T. The effect of MF on living cells depends on main reasons; 1) Intra-structure of the cell as chemicals contents that governed the conductivity of solution especially in the membranes (the first protective line), and genetic background.2) Outer structure which surrounded the cells (pH). 3) The density flux of MF, and 4). The status of MF, solid or correlated with frequencies (Hz). The MF play important role to regulate the clock-control gene. Therefore, the MF might be useful tool for change the pathway production belong biological system.