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High solar radiation has been recognized as one of the main causes of the overproduction of reactive oxygen species (ROS) and oxidative stress in plants. To remove the excess of ROS, plants use different antioxidants and tune their activity and/or isoform number as required for given light conditions. In this study, the adaptiveness of light-induced(More)
Oxidative stress results from incongruity between the generation of toxic reactive oxygen species (ROS) and the availability of their scavengers—antioxidants. Although the short-term effects of this phenomenon are attracting much scientific attention, oxidative stress may influence an organism’s metabolism over the long (evolutionary) time scale as well. To(More)
Seasonal variation in heat shock proteins Hsp70 and Hsp90 expression was studied in the leaves of two naturally growing Iris pumila populations, one inhabiting an open dune site, and the other the understorey of a Pinus silvestris stand. The Hsps were quantified by an immunoblotting procedure. The level of the Hsps was found to vary significantly both(More)
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