The Effects of Cold Acclimation on Several Enzyme Activities in Cucumber  Seedling

Abstract

Abstract: The changes in activities of SOD, peroxidase, catalase and ATPase in chilling sensitive cucumber (Cucumis sativus L.) seedlings using biochemical and cytochemical methods were studied. The results indicated that the activities of SOD, peroxidase and catalase enhanced dramatically in cold acclimated cucumber seedlings and the three enzymes remained stable under chilling stress. Consequently, the ability of cleaning up free radical of oxygen and peroxidates increased. The cold-tolerant character of plasmalemma ATPase activity was developed after low-temperature acclimation. All these changes provided the possibility for protecting the stability of membrane structure and metabolism from chilling injury, and for the enhancement of cold tolerance by low temperature acclimation.

Key words: Cold acclimation, SOD, Peroxidase, Catalase, ATPase, Cucumber

Dai Jin-ping, Shen Zheng-yan and Jian Ling-cheng. The Effects of Cold Acclimation on Several Enzyme Activities in Cucumber Seedling[J]. J Integr Plant Biol., 1991, 33(8): -.

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The Effects of Cold Acclimation on Several Enzyme Activities in Cucumber Seedling

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