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- W2025687052 abstract "When plants are exposed to low temperatures, they undergo changes in the activities of some of the enzymes that belong to important metabolic pathways. In order to understand if and how the enzymes of the antioxidant systems are involved in the cold acclimation process and during recovery from freezing, superoxide dismutase (SOD), catalase (CAT) and peroxidase (POX) activities were analysed. Triticum aestivum L. (c. vs. Brasilia and Eridano) seedlings were grown at 24/22°C (day/night temperatures) for control treatment and at 12/5 °C to induce cold acclimation, while freezing treatment was performed at −4 °C. Significant differences in activity between control and acclimated seedlings were observed for all of the enzymes studied except for catalase in leaves. No clear differences were found when comparing the two genotypes. After being exposed to freezing temperatures, the activities of enzymes were compared with those before treatment and the results were expressed as percentage of activation. Superoxide dismutase and catalase enzymes were found to be activated more in cold acclimated than in control leaves, while the opposite was observed for roots. Peroxidases proved to be activated more both in leaves and roots of control seedlings. Interesting differences after exposure to freezing temperatures were also found between the two cultivars analysed." @default.
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- W2025687052 date "1999-12-01" @default.
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- W2025687052 title "Protective Enzymes Against Activated Oxygen Species in Wheat (Triticum aestivum L.) Seedlings: Responses to Cold Acclimation" @default.
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- W2025687052 doi "https://doi.org/10.1016/s0176-1617(99)80094-7" @default.
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