Cold Stress Activates the Expression of Genes of the Chloroplast Transcription Apparatus in Arabidopsis thaliana Plants

The physiological and molecular responses of Arabidopsis thaliana plants to cold stress were studied. Exposure to a low non-freezing temperature (4°C, 5 days) caused a decrease in the physiological functions and activity of a number of photosynthetic genes and elevation in expression of the cold str...

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Veröffentlicht in:Doklady. Biochemistry and biophysics 2020-09, Vol.494 (1), p.235-239
Hauptverfasser: Bychkov, I. A., Kudryakova, N. V., Kuznetsov, Vl. V., Kusnetsov, V. V.
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Sprache:eng
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Zusammenfassung:The physiological and molecular responses of Arabidopsis thaliana plants to cold stress were studied. Exposure to a low non-freezing temperature (4°C, 5 days) caused a decrease in the physiological functions and activity of a number of photosynthetic genes and elevation in expression of the cold stress gene COR15a , the product of which protects chloroplasts. It was shown for the first time that in parallel to a general inhibition of physiological functions under hypothermia, an increase in the expression of most genes for the chloroplast transcription apparatus was observed. This is obviously one of the compensatory mechanisms of adaptation aimed to maintain cellular homeostasis and physiological functions under hypothermia.
ISSN:1607-6729
1608-3091
DOI:10.1134/S160767292005004X