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Generation of Activated Oxygen and Change of Cell Defense Enzyme Activity in Leaves of Korean Pine Seedling Under Low Temperature

Jing Li, Xiufeng Yan, ZU Yuan‐Gang

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Abstract

With the increase of stress time, the rate of O~(.)_(2) generation and H_(2)O_(2) content increased to a certain degree and then decreased. The increase of MDA content fluctuated as well as its decrease after the low-temperature stress was removed. The activity of cell defense enzymes, viz. superoxide dismutase (SOD), peroxidase (POD), catalase (CAT) and ascrobate peroxidase (ASP) were gradually decreased. However, after cold pre-treatment of the seedlings all these indexes showed marked changes and different ways of adaptivity to cold stress; thus enhanced the cold tolerance of the plant.

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What this paper is about

With the increase of stress time, the rate of O~(.)_(2) generation and H_(2)O_(2) content increased to a certain degree and then decreased. The increase of MDA content fluctuated as well as its decrease after the low-temperature stress was removed. The activity of cell defense enzymes, viz. superoxide dismutase (SOD), peroxidase (POD), catalase (CAT) and ascrobate peroxidase (ASP) were gradually decreased. However, after cold pre-treatment of the seedlings all these indexes showed marked changes and different ways of adaptivity to cold stress; thus enhanced the cold tolerance of the plant.

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OpenAlex reports 17 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

With the increase of stress time, the rate of O~(.)_(2) generation and H_(2)O_(2) content increased to a certain degree and then decreased. The increase of MDA content fluctuated as well as its decrease after the low-temperature stress was removed. The activity of cell defense enzymes, viz. superoxide dismutase (SOD), peroxidase (POD), catalase (CAT) and ascrobate peroxidase (ASP) were gradually decreased. However, after cold pre-treatment of the seedlings all these indexes showed marked changes and different ways of adaptivity to cold stress; thus enhanced the cold tolerance of the plant.

Key concepts: Catalase, Point of delivery, Superoxide dismutase, Seedling, Peroxidase, Enzyme, Horticulture, Cold tolerance

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Generation of Activated Oxygen and Change of Cell Defense Enzyme Activity in Leaves of Korean Pine Seedling Under Low Temperature — Research Paper | ScholarLens