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Effect of Salicylic Acid on Antioxidant Enzymes and Cold Tolerance of Cucumber Plants

The effect of salicylic acid (SA) on the reaction of cucumber plants ( Cucumis sativus L.) on the effect of low positive temperatures has been studied. It was found that treatment with SA promotes a decrease in the release of electrolytes from the tissues of cotyledonous leaves of seedlings exposed...

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Bibliographic Details
Published in:Russian journal of plant physiology 2021-05, Vol.68 (3), p.491-498
Main Authors: Ignatenko, A. A., Talanova, V. V., Repkina, N. S., Titov, A. F.
Format: Article
Language:English
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Summary:The effect of salicylic acid (SA) on the reaction of cucumber plants ( Cucumis sativus L.) on the effect of low positive temperatures has been studied. It was found that treatment with SA promotes a decrease in the release of electrolytes from the tissues of cotyledonous leaves of seedlings exposed to subdamaging (12°C) and damaging (4°C) temperatures. In the leaves of seedlings treated with SA and exposed to cold, a higher activity of superoxide dismutase, catalase, and guaiacol-specific peroxidase was recorded as well as an increase in the accumulation of transcripts of the genes encoding them ( CuZnSOD and CAT ) compared to the control variant (without SA treatment). Under the action of low temperatures (12 and 4°C) on seedlings, SA also reduced the formation of one of the end products of lipid peroxidation, malondialdehyde, in seedling leaves. It was concluded that SA has a protective effect on cucumber seedlings when exposed to low positive temperatures, which is expressed in the activation of antioxidant enzymes and a decrease in the level of oxidative stress.
ISSN:1021-4437
1608-3407
DOI:10.1134/S1021443721020059