THE EPR PARAMETER'S İNVESTİGATİON OF PLANTS UNDER THE INFLUENCE OF RADIATION FACTORS
2022
Rovshan I. Khalilov | Aygun N. Nasibova
In this paper, by using the method of Electron Paramagnetic Reso- nance (EPR) spectroscopy, the influence of some stress factors (ionizing gamma radiation, radioactive contamination, and UV radiation) on C-3 (wheat) and C-4 (corn) plants has been investigated. Under the influence of stress factors on C-3 plants, a stimulating effect is observed in their development, and in C-4 plants, stress factors have the opposite, inhibitory effect on the development of these plants. It is assumed that this process is related with photorespiration - with a protective system that prevents an increase in reactive oxygen species (ROS) dur- ing stress in type C-3 plants. In addition, the work shows that the stress factor has a stimulating effect on the generation of biogenic nanophase magnetic particles (Fe3O4 - magnetite and γ-Fe2O3 - maghemite) and leads to the appearance of anomalous magnetic properties in living systems. This effect can be used in the synthesis of functional magnetic iron oxide nanoparticles. The results show that stress factors play a stimulating role in the formation of paramagnetic centers in biological systems. This effect of exposure can be used as a bioindication parame- ter in environmental assessment and monitoring.
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