Author(s): ROVSHAN KHALILOV, AYGUN NASIBOVA
Published: Oct 13 2022
Keywords:
Keywords: radiation, radioactive contamination, stress factors, photorespiration,
EPR signals.
Annotation: In this paper, by using the method of Electron Paramagnetic Resonance
(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) during
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 parameter
in environmental assessment and monitoring.
