[Effect of clinorotation on the intensity of lipid peroxidation and superoxide dismutase activity in pea chloroplasts].
The lipid peroxidation intensity and the antioxidant enzyme superoxide dismutase (SOD) activity were studied in chloroplasts of Pisum sativum under clinorotation (for 7 and 14 days) for elucidating mechanisms of biological effect of altered gravity. In comparison with the control, increased LP levels in chloroplasts were established during both the terms of clinorotation. The SOD activity rose in the chloroplasts of plants clinorotated for 7 days, which has a significant protective effect. However, under a longer clinorotation (for 14 days) the SOD activity fell, being, however, higher than in the control samples. In accordance with the Selye oxidative stress theory, plants clinorotated for 7 days are in the phase of growing stability, while plants clinorotated for 14 days are in the phase of decreasing stability.
Baranenko
V V
VV
N. G. Kholodny Institute of Botany, National Academy of Sciences of Ukraine, Kiev.
D002736:Chloroplasts / Q000378:metabolism*; D015227:Lipid Peroxidation / Q000502:physiology*; D018532:Pisum sativum / Q000378:metabolism* / Q000648:ultrastructure; D012399:Rotation; D013482:Superoxide Dismutase / Q000502:physiology*; D018474:Weightlessness Simulation
D013482:Superoxide Dismutase