title: Pea chloroplasts under clino-rotation: lipid peroxidation and superoxide dismutase activity.
abstract: The lipid peroxidation (LP) intensity and the activity of the antioxidant enzyme superoxide dismutase (SOD) were studied in chloroplasts of pea (Pisum sativum L.) plants grown for 7 and 14 days under clino-rotation. An increase in LP levels in chloroplasts during both terms of clinorotation in comparison with stationary controls was documented. SOD activity increased in chloroplasts of plants that were clino-rotated for seven days. SOD has a significant protective effect by diminishing the availability of O2-. However, under more prolonged clino-rotation (14 days), SOD activity decreased but was still higher than in the control samples. In accordance with Selye's oxidative stress theory (Selye, 1956; modified by Leshem et al., 1998), plants that were clino-rotated for seven days are presumed to be in a stage of resistance while 14-day plants reached a stage of exhaustion.
authors.affiliation: Department of Cell Biology, Institute of Botany, Kiev, Ukraine.
authors.forename: V V
authors.initials: VV
authors.lastname: Baranenko
mesh_terms: D000222:Adaptation, Physiological; D002736:Chloroplasts / Q000201:enzymology*; D006112:Gravitation; D015227:Lipid Peroxidation; D018532:Pisum sativum / Q000201:enzymology*; D012399:Rotation; D013482:Superoxide Dismutase / Q000378:metabolism*
chemical_list: D013482:Superoxide Dismutase