Mitogenic and Mutagenic Effects of Ionized Air on Allium fistulosum L.

Mitogenic and Mutagenic Effects of Ionized Air on Allium fistulosum L. In the apical meristem of Allium fistulosum, the relationship between peroxide lipid oxidation, antioxidant activity, proliferative processes, the yield of chromosomal aberrations and duration the exposure to ionized air was studied. Under the influence of air oxygen ions, superoxide dismutase and catalase activities increased, proliferative processes were stimulated, and shifts occurred in the process of lipid peroxidation in cells of A. fistulosum. When these cells were treated with air oxygen for 40 min, hydrogen peroxide and iron sulfate (II) enhanced oxygen biostimulating effect via stimulation of antioxidant enzyme activity and inhibition of lipid peroxidation. Under these conditions, cell proliferation was intensified and the yield of chromosomal aberrations was reduced in A. fistulosum rootlets. When the time of seed treatment with ionized air was increased to 80 min, lipid peroxidation was activated, antioxidant enzyme activity was inhibited, and the yield of chromosomal aberration increased in seedlings. It was concluded that the biostimulating activity of ionized air was mediated by active oxygen species generated in the cell. The accumulation of TBA(thiobarbituric acid)-reactive products was shown to be related to a decrease in antioxidant enzyme activity and an increase in the yield of chromosomal aberrations. It is emphasized that the mutagenic effect of ionized air is associated with generating conditions that support Fenton reaction and OH-radical formation in the cell. Russian Journal of Genetics Springer Journals

Mitogenic and Mutagenic Effects of Ionized Air on Allium fistulosum L.

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Copyright © 2005 by MAIK "Nauka/Interperiodica"
Biomedicine; Microbial Genetics and Genomics; Animal Genetics and Genomics; Human Genetics
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