Estimation of the oxidative stress in moss Pohlia nutans (Hedw.) Lindb. depending on the influence of gravity

1Kyyak, NYa., 1Khorkavtsiv, Ya.D
1Institute of Ecology of the Carpathians of the National Academy of Sciences of Ukraine, L’viv, Ukraine
Space Sci.&Technol. 2016, 22 ;(4):58-66
Section: Space Life Sciences
Publication Language: Ukrainian
The state of a prooxidant-antioxidant system in the moss gametophyte Pohlia nutans (Hedw.) Lindb. in a real gravity and after clinorotation was investigated. The temporal dynamic of the lipid peroxidation primary and final products — diene conjugates and malonic dialdehyde was estimated under conditions of simulated microgravity. It is shown that the inducer of an antioxidant system in the conditions of gravitational stress is hydrogen peroxide, which causes the increase in catalase and peroxidase activity. It was ascertained a phase character of the prooxidant-antioxidant system reactions during clinorotation and reversibility of oxidative processes after stress.
Keywords: ascorbate peroxidase, catalase, clinorotation, hydrogen peroxide, lipid peroxidation, moss Pohlia nutans, peroxidase
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