Abstract

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.

中文翻译：

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冷胁迫激活拟南芥植物叶绿体转录仪基因的表达

摘要

研究了拟南芥植物对冷胁迫的生理和分子响应。暴露于较低的非冻结温度（4°C，5天）时，会导致一些光合基因的生理功能和活性下降，冷胁迫基因COR15a的表达升高，该产物可保护叶绿体。首次表明，在低温下对生理功能的一般抑制的同时，观察到叶绿体转录装置的大多数基因表达增加。这显然是适应性的补偿机制之一，旨在维持体温过低时的细胞稳态和生理功能。